MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Data Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Residuals are useful for investigating best model fit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following outcome is odd man out in the below figure? |
| A. | R Squared |
| B. | Kappa |
| C. | RMSE |
| D. | All of the mentioned |
| Answer» C. RMSE | |
| 3. |
Which of the following refers to the circumstance in which the variability of a variable is unequal across the range of values of a second variable that predicts it? |
| A. | Heterogeneity |
| B. | Heteroskedasticity |
| C. | Heteroelasticty |
| D. | None of the mentioned |
| Answer» C. Heteroelasticty | |
| 4. |
Which of the following is correct with respect to residuals? |
| A. | Positive residuals are above the line, negative residuals are below |
| B. | Positive residuals are below the line, negative residuals are above |
| C. | Positive residuals and negative residuals are below the line |
| D. | All of the mentioned |
| Answer» B. Positive residuals are below the line, negative residuals are above | |
| 5. |
Which of the following implies no relationship with respect to correlation? |
| A. | Cor(X, Y) = 1 |
| B. | Cor(X, Y) = 0 |
| C. | Cor(X, Y) = 2 |
| D. | All of the mentioned |
| Answer» C. Cor(X, Y) = 2 | |
| 6. |
Which of the following function can be replaced with the question mark in the below figure? |
| A. | boxplot |
| B. | lplot |
| C. | levelplot |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 7. |
RESIDUALS_ARE_USEFUL_FOR_INVESTIGATING_BEST_MODEL_FIT.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following refers to the circumstance in which the variability of a variable is unequal across the range of values of a second variable that predicts it ? |
| A. | Heterogeneity |
| B. | Heteroskedasticity |
| C. | Heteroelasticty |
| D. | None of the Mentioned |
| Answer» C. Heteroelasticty | |
| 9. |
Minimizing the likelihood is the same as maximizing -2 log likelihood. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following is correct with respect to residuals ? |
| A. | Positive residuals are above the line, negative residuals are below |
| B. | Positive residuals are below the line, negative residuals are above |
| C. | Positive residuals and negative residuals are below the line |
| D. | All of the Mentioned |
| Answer» B. Positive residuals are below the line, negative residuals are above | |
| 11. |
Normalized data are centered at ___ and have units equal to standard deviations of the original data. |
| A. | 0 |
| B. | 5 |
| C. | 1 |
| D. | 10 |
| Answer» B. 5 | |
| 12. |
Which of the following implies no relationship with respect to correlation ? |
| A. | Cor(X, Y) = 1 |
| B. | Cor(X, Y) = 0 |
| C. | Cor(X, Y) = 2 |
| D. | All of the Mentioned |
| Answer» C. Cor(X, Y) = 2 | |