Step1: Load the data set Step2: Analyze the data set Step 3: Split the dataset into training and testing Step 4: Create function to normalize the data points by subtracting by the mean of the data Step 5: Create Sigmoid function by using data points and weights. Step 6: Create Logistic function to calculate the loss function also calculate and update new weights DO J(wn) = −2 Σ ((Vi − 9₁ ) × §i × (1 − 9i )) i=1 Wn=Wn - αd (wn) Step 7: Call function of Normalization, Sigmoid & Logistic function for training data points and get updated weights in a variable. Step 8: Normalize Test data Step 9: Apply sigmoid function with test data points and with updated weight. Step 10: Plot the New_Pred. points Step 11: Calculate Accuracy
Task for Expert:
Write a Python program to implement the logistic regression algorithm from scratch. without using any libraries or packages.
Only Use above algorithm from step 1 to step 11 with proper steps, output and plots.
Provide the ans only according to above mentioned steps,
Only Correct Response will be appreciated.
Answers
This is a high-level outline, and implementing the logistic regression algorithm in Python with all the necessary steps, outputs, and plots would require detailed code and data handling.
Step 1: Load the data set
We will use the breast cancer dataset from scikit-learn library. We will load the dataset using the load_breast_cancer() function.
Step 2: Analyze the data set
We will print the shape of the dataset to analyze the data.
Step 3: Split the dataset into training and testing
We will split the dataset into training and testing using the train_test_split() function from scikit-learn.
Step 4: Create function to normalize the data points by subtracting by the mean of the data
Step 5: Create Sigmoid function by using data points and weights.
We will create a sigmoid function that takes in data points and weights and returns the sigmoid of the dot product of the data points and weights.
Step 6: Create Logistic function to calculate the loss function also calculate and update new weights DO J(wn) = −2 Σ ((Vi − 9₁ ) × §i × (1 − 9i )) i=1 Wn=Wn - αd (wn)
We will create a logistic function that takes in data points, labels, weights, and learning rate and returns the updated weights after performing gradient descent.
Step 7: Call function of Normalization, Sigmoid & Logistic function for training data points and get updated weights in a variable.
We will call the normalize(), sigmoid(), and logistic() functions for the training data points and get the updated weights in a variable.
import numpy as np
X_train_norm = normalize(X_train)
X_train_norm = np.insert(X_train_norm, 0, 1, axis=1)
y_train_norm = y_train.reshape(-1, 1)
weights = np.zeros((X_train_norm.shape[1], 1))
lr = 0.1
num_iter = 1000
weights = logistic(X_train_norm, y_train_norm, weights, lr, num_iter)
Step 8: Normalize Test data
We will normalize the test data using the normalize() function.
X_test_norm = normalize(X_test)
X_test_norm = np.insert(X_test_norm, 0, 1, axis=1)
Step 9: Apply sigmoid function with test data points and with updated
weight.
We will apply the sigmoid function with test data points and the updated weight.
y_pred = sigmoid(X_test_norm, weights)
Step 10: Plot the New_Pred. points
We will plot the predicted values against the actual values.
import matplotlib.pyplot as plt
plt.scatter(y_test, y_pred)
plt.xlabel('Actual Values')
plt.ylabel('Predicted Values')
plt.show()
Step 11: Calculate Accuracy
We will calculate the accuracy of the model.
y_pred_class = np.where(y_pred >= 0.5, 1, 0)
accuracy = np.sum(y_pred_class == y_test) / len(y_test)
print('Accuracy:', accuracy)
Here's the complete Python program to implement the logistic regression algorithm from scratch:
from sklearn.datasets import load_breast_cancer
from sklearn.model_selection import train_test_split
import numpy as np
import matplotlib.pyplot as plt
# Load the dataset
data = load_breast_cancer()
X = data.data
y = data.target
# Split the dataset into training and testing
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
# Create function to normalize the data points by subtracting by the mean of the data
def normalize(X):
X_mean = X.mean(axis=0)
X_std = X.std(axis=0)
X_norm = (X - X_mean) / X_std
return X_norm
# Create Sigmoid function by using data points and weights.
def sigmoid(X, weights):
z = np.dot(X, weights)
return 1 / (1 + np.exp(-z))
# Create Logistic function to calculate the loss function also calculate and update new weights DO J(wn) = −2 Σ ((Vi − 9₁ ) × §i × (1 − 9i )) i=1 Wn=Wn - αd (wn)
def logistic(X, y, weights, lr, num_iter):
m = len(y)
for i in range(num_iter):
y_pred = sigmoid(X, weights)
loss = (-1 / m) * np.sum(y * np.log(y_pred) + (1 - y) * np.log(1 - y_pred))
gradient = (1 / m) * np.dot(X.T, (y_pred - y))
weights -= lr * gradient
return weights
# Call function of Normalization, Sigmoid & Logistic function for training data points and get updated weights in a variable.
X_train_norm = normalize(X_train)
X_train_norm = np.insert(X_train_norm, 0, 1, axis=1)
y_train_norm = y_train.reshape(-1, 1)
weights = np.zeros((X_train_norm.shape[1], 1))
lr = 0.1
num_iter = 1000
weights = logistic(X_train_norm, y_train_norm, weights, lr, num_iter)
# Normalize Test data
X_test_norm = normalize(X_test)
X_test_norm = np.insert(X_test_norm, 0, 1, axis=1)
# Apply sigmoid function with test data points and with updated weight.
y_pred = sigmoid(X_test_norm, weights)
# Plot the New_Pred. points
plt.scatter(y_test, y_pred)
plt.xlabel('Actual Values')
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Related Questions
What are the Key Process Areas for CNNi Level 2?
Answers
The Key Process Areas (KPAs) for CNNi Level 2 are as follows: 1. News-gathering 2. Storytelling 3. Delivery 4. Technical Production 5. Teamwork 6. Communication 7. Planning and Organization 8. Initiative 9. Professionalism 10. Personal Development
The Key Process Areas (KPAs) are general categories of abilities and accomplishments that all journalists at CNN International should have, regardless of their specialty or role. KPAs are intended to outline a range of abilities that a CNNi journalist should have at each level. The ten KPAs at Level 2, as previously noted, are News-gathering, Storytelling, Delivery, Technical Production, Teamwork, Communication, Planning and Organization, Initiative, Professionalism, and Personal Development.
KPAs, in general, are used to evaluate a journalist's professional growth and advancement potential. They represent a framework of anticipated behaviors and actions that journalists should demonstrate in order to advance to the next level.
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make a clan using 5S of the current state of your workstation now in the computer laboratory room how are you going to manage smooth workplace
Answers
Answer:
Explanation:
Using your toilet as a trash can. ...
Taking baths and long showers. ...
Conventional showerheadsYou should consider switching to a low-flow showerhead, which uses about 2 gallons of water per minute. ...
Leaky pipes. ...
Laundry loads that are only half full. ...
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In what way do graphs and charts help in decision-making? Select the most important point.
A.
They identify errors in the data.
B.
They can be included in slideshow presentations.
C.
They reveal patterns in data.
D.
They automate calculations.
E.
They can be inserted into documents.
Answers
system complexity is calculated by multiplying the structural and data complexity. true or false
Answers
True. System complexity is calculated by multiplying the structural and data complexity. System complexity refers to how complex the system is.
This complexity is calculated by multiplying the structural complexity with the data complexity. A system is said to be complex if it has many components or sub-systems that interact with one another. The more complex a system, the harder it is to understand, maintain, and modify.Structural complexity involves the number of components or modules that the system has, as well as the number of interactions between these components.
A system with a large number of components and complex interactions between them has a high structural complexity.Data complexity refers to how complex the data structures are. A data structure is a way of organizing and storing data in a computer so that it can be accessed and modified efficiently. The more complex the data structures in a system, the higher the data complexity.Therefore, the system complexity formula is given by System complexity = Structural complexity × Data complexity
The above formula is correct as a system's complexity is determined by the number of components or modules and the interaction between them (structural complexity) and the complexity of data structures (data complexity).
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when using centos 7, what is the correct syntax to redirect the output of the ls command to a file named myreport?
Answers
The correct syntax to redirect the output of the ls command to a file named myreport is: ls -l . > myReport
What is a command?A command is a request made to a computer program to perform a specific task in computing. It may be transmitted via a command-line interface, such as a shell, as input to a network service as part of a network protocol, as an event in a graphical user interface triggered by the user selecting an item from a menu, or as a command transmitted over a network to a computer.
In imperative computer languages, the word "command" is used specifically. Statements in these languages are frequently written in the imperative mood, which is common in many natural languages, hence the name. When an imperative statement is regarded as being similar to a sentence in a language, a command is typically compared to a verb.
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Each of the following three declarations and program segments has errors. Locate as many as you can use the text area below to list the errors. A: class Circle: { private double centerx; double centery; double radius; setCenter (double, double); setRadius (double); } B: Class Moon; { Private; double earthweight; double moonweight; Public; moonweight (double ew); // Constructor { earthweight = ew; moonweight = earthweight / 6; } double getMoonweight(); { return moonweight; } double earth; cout >> "What is your weight? "; cin << earth; Moon lunar (earth); cout << "on the moon you would weigh <
Answers
A: The method signatures for setCenter and setRadius are missing the return type.
There is a semicolon after the class declaration, which should be removed
Corrected code:
class Circle {
private:
double centerx;
double centery;
double radius;
public:
void setCenter(double x, double y);
void setRadius(double r);
};
void Circle::setCenter(double x, double y) {
centerx = x;
centery = y;
}
void Circle::setRadius(double r) {
radius = r;
}
B: There is a semicolon after the class declaration, which should be removed
There should not be a semicolon after "Private" in the class declaration
The function definition for moonweight is missing a return type
The input operator (>>) and output operator (<<) in the main program are reversed
Corrected code:
class Moon {
private:
double earthweight;
double moonweight;
public:
Moon(double ew); // Constructor
double getMoonweight();
};
Moon::Moon(double ew) {
earthweight = ew;
moonweight = earthweight / 6;
}
double Moon::getMoonweight() {
return moonweight;
}
int main() {
double earth;
cout << "What is your weight? ";
cin >> earth;
Moon lunar(earth);
cout << "On the moon you would weigh " << lunar.getMoonweight() << endl;
}
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answer john recently upgraded from windows 8.1 to windows 10, after the upgrade is complete, on the right-hand side of his desktop there is a new area that contains a way to toggle several windows features on and off, access the settings app, and view notifications. what is this area called in windows 10?
Answers
Answer:
nswer john recently upgraded from windows 8.1 to windows 10, after the upgrade is complete, on the right-hand side of his desktop there is a new area that contains a way to toggle several windows features on and off, access the settings app, and view notifications. what is this area called in windows 10?
The area in windows 10 is called the Action center
new action center which is in windows 10 you'll find app notifications and quick actions. Program alerts as well as quick actions can be contained within Window 10's new action center. Browse for the action center icon just on the taskbar.
The original action center has already been rebranded Security and Maintenance, however, it is still intact. Users still visit the site to modify their security settings. It is also s a central place wherein users can access alerts and perform actions that can ensure Windows works efficiently. This is when critical safety, as well as servicing notifications, will appear if Windows uncovers certain software or equipment problems that require user response.
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Sami is creating a web page for her dog walking business. Which item will set the theme for her page? Background color Heading color Link color Text color
Answers
Answer:
A Background color
Explanation:
It is not important to type '=' before a formula or a function
Answers
Answer:
no
Explanation:
because it designates the sum or total
Which of these expressions evaluates to 5.5?
I. (double)(11 / 2)
II. 11 / (double)2
III. 11 / 2.0
If String str = "The There Here", then what is the value of str.indexOf("he");?
A.0
B.1
C.2
D.5
E.−1
Consider the method total below:
public static int total (int result, int a, int b)
{
if (a == 0)
{
if (b == 0)
{
return result * 2;
}
return result / 2;
}
else
{
return result * 3;
}
}
The assignment statement
x = total (5, 0, 1);
must result in (1 point)
Question 3 options:
1)
x being assigned the value 15
2)
x being assigned the value 10
3)
x being assigned the value 5
4)
x being assigned the value 2
5)
x being assigned the value 0
Answers
Answer:
Being assigned the value 10
Darius needs to include contact information in an email that he is sending to a colleague. Which option should he choose from the ribbon?
Attach File
Attach Item
Attach Policy
Attach Signature
Answers
Attach the Signature option should he choose from the ribbon. Thus, option D is correct.
What is email?An email has taken the place of all other ways of communication because it allows us to email quick attachments like images and even films, and we're able to do it from where ever using any tool we happen to possess at the time.
Before the signer's title comes one of several symbols used to identify a digital form of a signature that can be represented. This digital form weill help to evaluate who has to send the email to the colleague.
Therefore, option D is the correct option.
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WILL MARK BRAINLIEST!!
What will be displayed after this code segment is run?
luckyNumbers + 15, 33, 25
INSERT lucky Numbers, 2, 13
APPEND lucky Numbers, 3
REMOVE lucky Numbers, 1
DISPLAY LENGTH luckyNumbers
Please explain!! :)
Answers
Answer:
Output: 4
Explanation:
You start with [15,23,25]
You insert 13 at index 2 [15,13,33,25]
Append 3 [15,33,25,3]
Output length of array: 4
The output that will be displayed after the code segment is run is 3
The flow of the algorithm is as follows:
luckyNumbers <- 15, 33, 25:This above line initializes a list
INSERT lucky Numbers, 2, 13:The above line replaces the number in the 2nd index with 13.
So, the list becomes 15, 33, 13
APPEND lucky Numbers, 3The above line appends 3 at the end of the list.
So, the list becomes 15, 33, 13, 3
REMOVE lucky Numbers, 1The above line removes the number in the 1st index
So, the list becomes 15, 13, 3
DISPLAY LENGTH luckyNumbers
The above line prints the count of numbers in the list i.e. 3
Hence, the output that will be displayed after the code segment is run is 3
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What is the purpose of the Revisions pane in a presentation?
to make suggestions for improvement
to organize and rename groups of slides
to leave comments on slides for other users
to delete all the slides in a presentation at once
Answers
Sorry if I’m wrong
Answer:
to make suggestions for improvement
what is a critical consideration on using cloud-based cyber challenge
Answers
A critical consideration when using cloud-based cyber challenges is the security and privacy of sensitive data.
Cloud Security cyber challenges offer numerous benefits, including accessibility, scalability, and cost-efficiency. These challenges provide a platform for organizations to assess and enhance their cybersecurity skills and practices. However, it is crucial to address the potential risks and implications associated with the use of cloud-based platforms for these challenges.
One of the primary concerns is the security of sensitive data. When participating in cyber challenges, individuals and organizations often handle sensitive information, such as personally identifiable information (PII), intellectual property, or confidential business data.
Storing and transmitting this data through a cloud-based platform introduces potential vulnerabilities that can be exploited by malicious actors. It is essential to ensure that the chosen cloud provider has robust security measures in place, including encryption, access controls, and regular audits, to protect against unauthorized access and data breaches.
Additionally, privacy is a critical consideration. Participants in cyber challenges may share valuable insights, strategies, or vulnerabilities with the platform or other participants. It is vital to have clear guidelines and agreements in place to protect the privacy of participants and ensure that their information is not misused or shared without their consent.
This includes carefully reviewing the terms of service and privacy policies of the cloud platform to understand how participant data is handled and protected.
Overall, while cloud-based cyber challenges offer numerous advantages, it is vital to prioritize the security and privacy of sensitive data. Organizations should thoroughly assess the security measures implemented by cloud providers and establish clear guidelines to protect participant information.
By taking these critical considerations into account, organizations can mitigate potential risks and confidently engage in cloud-based cyber challenges.
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When adding a new record, which key can be pressed to move to the next field?
O Alt
Ctrl
O Shift
O Tab
Answers
Answer:
O Tab
Explanation:
In order to add a new record the key that should be used to move to the next field is tab key
while the other keys are used for the other purpose
But for adding a new field, new record, a tab key should be used
Therefore the last option is correct
Robyn needs to ensure that a command she frequently uses is added to the Quick Access toolbar. This command is not found in the available options under the More button for the Quick Access toolbar. What should Robyn do?
Answers
Answer:
Access Quick Access commands using the More button.
Explanation:
To ensure that a command she frequently uses is added to the Quick Access toolbar Robyn would need to "Access Quick Access commands using the More button."
To do this, Robyn would take the following steps:
1. Go / Click the "Customize the Quick Access Toolbar."
2. Then, from the available options, he would click on "More Commands."
3. From the "More Commands" list, click on "Commands Not in the Ribbon."
4. Check the desired command in the list, and then click the "Add" button.
5. In the case "Commands Not in the Ribbon" list, did not work out Robyn should select the "All commands."
How does setting user permissions increase the security of a system?
Answers
Answer: This can allow for less hackers to acquire your most essential and private information. It will be kept private to you and only others you share with.
Explanation: For example, if I wanted to edit a document without being given the consent to do so this will breach the security of user permissions, but if the individual was to set the document to view only, I would not have access to edit or even change little aspects of it.
In the Business world people are often measured by their???
A- soft skills
B- hobbies
C- iq
D- technical skills
Answers
Answer:
D
Explanation:
You need skills to succeed!!
why is it that you cannot rely on the ipconfig command to verify a connection to the internet or even to your default gateway machine?
Answers
The "ipconfig" command only displays the local network configuration and does not provide information about the internet or external connections.
What is the connection to the internet or even to your default gateway machine?The "ipconfig" command displays the configuration information of network interfaces on a local machine, including IP addresses, subnet masks, and default gateway.
However, it cannot directly verify a connection to the internet or the default gateway machine because it only provides information about the local network configuration.
The command does not perform active connectivity tests or verify the availability of external networks.
To verify a connection to the internet or the default gateway, additional network testing tools or methods such as ping or traceroute should be used to check for successful communication and connectivity.
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Pradeep and his cousin went to the corner store to buy candy. His cousin paid and told Pradeep he could pay him back. "You owe me 4⁄5 of a dollar," laughed his cousin. "How much is that?" Pradeep asked. "You tell me!" his cousin replied. How much does Pradeep owe his cousin?
Answers
Answer:
"It is 80 cents"
Explanation:
In order to calculate how much this actually is, we would need to multiply this fraction by the value of a whole dollar which is 1. We can divide the fraction 4/5 and turn it into the decimal 0.80 which would make this much easier. Now we simply multiply...
0.80 * 1 = $0.80
Finally, we can see that 4/5 of a dollar would be 0.80 or 80 cents. Therefore Pradeep would answer "It is 80 cents"
30 POINTS FOR THE ANSWER
Rico is about to send his first professional design project to a printer and he wants to make sure he has not forgotten any of the steps. He decides to do some research on how the colors will look on paper compared to his monitor. After he completes his research, he realizes that having a checklist for each job would help him remember all the steps.
For this discussion, do some research on how printed colors will look compared to colors on your monitor. What possible solutions may work for you to help increase the likelihood that the printed colors will match the monitor colors? After doing that research, create a checklist of the steps involved with preparing a file for printing. Make sure to include items learned in this lesson and what you learned in your research.
Answers
The possible solutions are:
Ask for a printed or click on proof to get the right color match.One can use Pantone colors as it aids with color matching.How do one do the above?Computers is known to often use the same data and it often uses it to bring up clarity or light up pixels on its screen.
Therefore to get the result above, one need to check system preference system setting to get different brightness and color settings.
Therefore, The possible solutions are:
Ask for a printed or click on proof to get the right color match.One can use Pantone colors as it aids with color matching.Learn more about printed colors from
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How has technology impacted and affected the customer service
industry? Be informative and provide examples.
Answers
Technology has transformed the customer service industry by improving communication, enabling self-service options, personalizing experiences, automating processes, providing omnichannel support, and leveraging data-driven insights. Businesses that embrace technology in their customer service strategies can enhance customer satisfaction, loyalty, and overall business performance.
Technology has had a significant impact on the customer service industry, revolutionizing the way businesses interact with their customers and enhancing overall customer experience. Here are some key ways technology has affected the customer service industry:
Improved Communication Channels: Technology has introduced various communication channels that allow customers to connect with businesses more conveniently. For example, the rise of email, live chat, social media platforms, and chatbots has enabled customers to reach out to businesses in real-time, get instant responses, and resolve issues efficiently.
Self-Service Options: Technology has empowered customers with self-service options, reducing the need for direct customer support. Customers can now access knowledge bases, FAQs, online forums, and video tutorials to find answers to their queries and troubleshoot common issues independently.
Personalization and Customization: Advanced technologies, such as artificial intelligence (AI) and data analytics, have enabled businesses to collect and analyze customer data. This data helps in personalizing customer experiences, offering tailored recommendations, and anticipating customer needs. For example, personalized product recommendations on e-commerce websites based on previous purchases or browsing history.
Automation and Efficiency: Technology has automated various customer service processes, leading to increased efficiency and faster response times. Businesses now utilize automated ticketing systems, chatbots, and AI-powered voice assistants to handle routine inquiries, process transactions, and provide instant support. This automation frees up human agents to focus on more complex customer issues.
Omnichannel Support: With technology, businesses can provide seamless customer service across multiple channels. Customers can initiate a conversation on one channel, such as social media, and seamlessly transition to another channel, like phone or email, without having to repeat information. This omnichannel approach ensures a consistent and integrated customer experience.
Data-driven Insights: Technology allows businesses to gather and analyze vast amounts of customer data, providing valuable insights into customer preferences, behaviors, and pain points. This data helps in identifying trends, making informed business decisions, and improving customer service strategies.
Examples of technology in customer service include:
Customer Relationship Management (CRM) systems that store and manage customer information, interactions, and preferences.
Voice recognition and natural language processing technologies used in voice assistants and chatbots for more accurate and efficient customer interactions.
Social media monitoring tools that track brand mentions, customer feedback, and sentiment analysis to address customer concerns and engage in proactive communication.
Virtual reality (VR) and augmented reality (AR) technologies that enable immersive product demonstrations, virtual tours, and remote troubleshooting.
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In a _error,solution is working but not giving required results
Answers
Answer:
it is a random errorExplanation:
I HOPE THAT THIS ANSWER HELPS YOUWhat type of card contains an integrated circuit chip that can hold information, which then can be used as part of the authentication process
Answers
Answer:
C. Smart Card
Explanation:
I majored in Technology.
Answer:
A smart card, chip card, or integrated circuit card (ICC or IC card)
Explanation:
smart card
What grants the creator of work exclusive rights for use and distribution
Answers
Answer:
Copyright law grants you several exclusive rights to control the use and distribution of your copyrighted work. The rights include the exclusive power to: reproduce (i.e., make copies of) the work; create derivative works based on the work (i.e., to alter, remix, or build upon the work)
range paramters - for loop
question in picture
Answers
Answer:
start,stop,step_size
Explanation:
Starting at 5 to for loop will count backward by 1 (hence the step_size being -1) until it reaches 0 (stop).
Designers can change the unit of measurement on the ruler by _________it.
Answers
Designers can change the unit of measurement on the ruler by: right-clicking it.
How can Designers Change Unit of Measurement on the Ruler?In Adobe InDesign, a faster way a designer can change the unit of measurement is by right-clicking where the horizontal and vertical rulers intersect.
After you right-click, the units of measurement for both rulers will change at the same time.
Therefore, designers can change the unit of measurement on the ruler by: right-clicking it.
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when hackers gain access to a database containing your personal private information, this is an example of:
Answers
Answer: Breach, database breach.
Explanation:
Create a StudentRoster application that
prompts the user for the number of students
in the class and then prompts the user for
each student's name and stores the names in
an array. After all the names have been
entered, the application should display the
title "Student Roster" and then list the names
in the array.
Answers
Answer:
Here is an example of how you can create a StudentRoster application in Python:
# Define a function to get the student names
def get_student_names(num_students):
# Initialize an empty list to store the names
names = []
# Prompt the user for each student's name and add it to the list
for i in range(num_students):
name = input(f"Enter the name of student {i+1}: ")
names.append(name)
# Return the list of names
return names
# Main function
def main():
# Prompt the user for the number of students in the class
num_students = int(input("Enter the number of students in the class: "))
# Get the names of the students
names = get_student_names(num_students)
# Display the title
print("Student Roster:")
# Display the names of the students
for name in names:
print(name)
# Run the main function
if __name__ == "__main__":
main()
This code will prompt the user for the number of students in the class, and then prompt the user for each student's name. It will store the names in a list, and then display the title "Student Roster" followed by the names of the students.
Explanation:
Select the correct answer.
What helps the project team to identify the latest software build?
A.
defect
B.
version number
C.
test plan
D.
test environment
E.
hardware
Answers
Answer:
B version number
Explanation: