Data Analytics with Python Nptel Week 6 Assignment Answers
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Data Analytics with Python Nptel Week 6 Quiz Answers (Jan-Apr 2025)
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- The model developed from sample data having the form of is known as
a. Regression equation
b. Correlation equation
c. Estimated regression equation
d. Regression model
- In regression analysis, which of the following is not a required assumption about the error term e?
a. The expected value of the error term is one
b. The variance of the error term is the same for all values of X.
c. The values of the error term are independent
d. The error term is normally distributed
- A regression analysis between sales (Y in $1000) and advertising (X in dollars) resulted in the following equation:
= 30,000 + 5X
The above equation implies that an:
a. Increase of $5 in advertising is associated with an increase of $5,000 in sales
b. Increase of $1 in advertising is associated with an increase of $5 in sales
c. Increase of $1 in advertising is associated with an increase of $35,000 in sales
d. Increase of $1 in advertising is associated with an increase of $5,000 in sales
- In a regression and correlation analysis if r² = 1, then
a. SSE = SST
b. SSE = 1
c. SSR = SSE
d. SSR = SST
- SSE can never be
a. Larger than SST
b. Smaller than SST
c. Equal to 1
d. Equal to zero
- For the given data, determine the R-squared value:
Data:
| Miles Travel | Petrol Consumption (L) |
|---|---|
| 20 | 1 |
| 45 | 3 |
| 56 | 5 |
| 34 | 2 |
| 28 | 1.6 |
| 49 | 3.7 |
a. 0.887
b. 0.956
c. 0.945
d. 0.932
- In question no. 6, we will:
a. Accept the null hypothesis
b. Reject the null hypothesis
c. Can’t state any conclusion
d. None of the above
- In Question 6, determine a 95% confidence interval for b₁ to test the hypotheses:
a. (0.045, 0.138)
b. (0.055, 0.148)
c. (0.065, 0.158)
d. (0.075, 0.138)
- State TRUE or FALSE –
Statement: The variance of error is the same for all values of the independent variable.
a. True
b. False
- Which of the following is possible for the coefficient of determination:
a. It can be larger than 1
b. It is less than one
c. It can be less than -1
d. None of these alternatives is correct
Data Analytics with Python Nptel Week 6 Quiz Answers (Jan-Apr 2025)
For answers to additional Nptel courses, please refer to this link: NPTEL Assignment
