Data Analytics with Python Nptel Week 9 Assignment Answers
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Data Analytics with Python Nptel Week 9 Quiz Answers (Jan-Apr 2025)
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1. State true or false: Statement: there is no difference between, E(y) = 0 + 1x and y = 0 + 1x + e , both are regression equations
a. True
b. False
2. Which of the following statements is correct:
a. Sensitivity in ROC analysis is called True Positive Rate (tpr)
b. Specificity in ROC analysis is not called True Negative Rate (tnr)
c. Specificity in ROC analysis is called True Positive Rate (tpr)
d. Sensitivity in ROC analysis is called True Negative Rate (tnr)
3. In ROC analysis when the Threshold value is Higher:
a. Specificity decreases
b. Sensitivity decreases
c. Both a. and b.
d. None of the above
4. Sensitivity in ROC analysis is defined as (TP = True Positive, FP = False Positive, TN = True Negative, FN = False Negative):
a. FP / (FP+TN)
b. FN / (TP+FN)
c. TN / (TN+FP)
d. TP / (TP+FN)
5. In ROC analysis, a classifier is called ‘good’ if it has ______
a. Low TPR and Low FPR
b. Low TPR and High FPR
c. High TPR and Low FPR
d. High TPR and High FPR
6. For the given confusion matrix, compute the recall
| True Positive | True Negative | |
|---|---|---|
| Predicted Positive | 8 | 3 |
| Predicted Negative | 2 | 7 |
a. 0.73
b. 0.7
c. 0.78
d. 0.8
7. State true or False: Precision is inversely proportional to recall
a. True
b. False
8. State True or False: Standardization of features is not required before training a Logistic regression model
a. True
b. False
9. Which of the following option is true?
a. Linear Regression errors values have to be normally distributed but in the case of Logistic Regression it is not the case
b. Logistic Regression errors values have to be normally distributed but in the case of Linear Regression it is not the case
c. Both Linear Regression and Logistic Regression error values have to be normally distributed
d. Both Linear Regression and Logistic Regression error values have not to be normally distributed
10. Which of the following is true regarding the logistic function for any value “x”?
a. Logistic(x) = Logit(x)
b. Logistic(x) = Logit_inv(x)
c. Logit_inv(x) = Logit(x)
d. None of these
Data Analytics with Python Nptel Week 9 Quiz Answers (Jan-Apr 2025)
For answers to additional Nptel courses, please refer to this link: NPTEL Assignment