MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
The preProcess class can be used for many operations on predictors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following function is used to generate the class distances? |
| A. | preprocess.classDist |
| B. | predict.classDist |
| C. | predict.classDistance |
| D. | all of the mentioned |
| Answer» C. predict.classDistance | |
| 3. |
Which of the following can also be used to find new variables that are linear combinations of the original set with independent components? |
| A. | ICA |
| B. | SCA |
| C. | PCA |
| D. | None of the mentioned |
| Answer» B. SCA | |
| 4. |
The function preProcess estimates the required parameters for each operation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following can be used to impute data sets based only on information in the training set? |
| A. | postProcess |
| B. | preProcess |
| C. | process |
| D. | all of the mentioned |
| Answer» C. process | |
| 6. |
Which of the following function can be used to flag predictors for removal? |
| A. | searchCorrelation |
| B. | findCausation |
| C. | findCorrelation |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
Which of the following function can be used to identify near zero-variance variables? |
| A. | zeroVar |
| B. | nearVar |
| C. | nearZeroVar |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 8. |
Which of the following function is a wrapper for different lattice plots to visualize the data? |
| A. | levelplot |
| B. | featurePlot |
| C. | plotsample |
| D. | none of the mentioned |
| Answer» C. plotsample | |