Practical Data Science using Python - Logistic Regression - Model Optimization
Interactive Video
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Information Technology (IT), Architecture, Mathematics
•
University
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Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of plotting the false positive rate and true positive rate?
To identify the best model parameters
To determine the accuracy of a model
To calculate the precision of predictions
To visualize the trade-off between sensitivity and specificity
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might a probability threshold other than 0.5 be considered?
To achieve a better balance between sensitivity and specificity
To reduce the computational cost
To increase the model's complexity
To improve the model's interpretability
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do lambda functions contribute to data frame operations?
They reduce the size of the data frame
They enhance the visualization of data
They increase the accuracy of predictions
They simplify the code and improve performance
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to predicted values when the probability threshold is set to 0?
All values are predicted as zero
Values are predicted randomly
All values are predicted as one
Values are predicted based on the mean
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of increasing the probability threshold on sensitivity?
Sensitivity becomes unpredictable
Sensitivity increases
Sensitivity decreases
Sensitivity remains constant
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of specificity in model evaluation?
It measures the model's overall accuracy
It measures the model's ability to predict negative cases
It measures the model's ability to predict positive cases
It measures the model's computational efficiency
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to find an optimal probability threshold?
To maximize the model's complexity
To balance sensitivity and specificity for better performance
To minimize the data processing time
To ensure the model is user-friendly
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