Explore topic-wise MCQs in Data Science.

This section includes 15 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.

All values of categorical data are either in categories or np.nan.

A. True
B. False
Answer» B. False
2.

Which of the following method can be used to rename categorical data?

A. Categorical.rename_categories()
B. Categorical.rename()
C. Categorical.mv_categories()
D. None of the mentioned
Answer» B. Categorical.rename()
3.

Using _________ on categorical data will produce similar output to a Series or DataFrame of type string.

A. .desc()
B. .describe()
C. .rank()
D. none of the mentioned
Answer» C. .rank()
4.

Which of the following is used to generate an index with time delta?

A. TimeIndex
B. TimedeltaIndex
C. LeadIndex
D. None of the mentioned
Answer» C. LeadIndex
5.

Which of the following scalars can be converted to other ‘frequencies’ by as typing to a specific timedelta type?

A. Timedelta Series
B. TimedeltaIndex
C. Timedelta
D. All of the mentioned
Answer» E.
6.

Numeric reduction operation for timedelta64[ns] will return _________ objects.

A. Timeseries
B. Timeplus
C. Timedelta
D. None of the mentioned
Answer» D. None of the mentioned
7.

Which of the following operations are supported on Time Frames?

A. idxmax
B. ixmax
C. ixmin
D. none of the mentioned
Answer» B. ixmax
8.

WHICH_OF_THE_FOLLOWING_METHOD_CAN_BE_USED_TO_RENAME_CATEGORICAL_DATA_??$

A. Categorical.rename_categories()
B. Categorical.rename()
C. Categorical.mv_categories()
D. None of the Mentioned
Answer» B. Categorical.rename()
9.

All values of categorical data are either in categories or np.nan.$

A. True
B. False
Answer» B. False
10.

Using _________ on categorical data will produce similar output to a Series or DataFrame of type string?

A. .desc()
B. .describe()
C. .rank()
D. none of the Mentioned
Answer» C. .rank()
11.

Combination of TimedeltaIndex with DatetimeIndex allow certain combination operations that are NaT preserving.

A. True
B. False
Answer» B. False
12.

Which of the following is used to generate an index with time delta ?

A. TimeIndex
B. TimedeltaIndex
C. LeadIndex
D. None of the Mentioned
Answer» C. LeadIndex
13.

Which of the following scalars can be converted to other ‘frequencies’ by astyping to a specific timedelta type?$

A. Timedelta Series
B. TimedeltaIndex
C. Timedelta
D. All of the Mentioned
Answer» E.
14.

Numeric reduction operation for timedelta64[ns] will return _________ objects.

A. Timeseries
B. Timeplus
C. Timedelta
D. None of the Mentioned
Answer» D. None of the Mentioned
15.

Which of the following operations are supported on Time Frames ?

A. idxmax
B. ixmax
C. ixmin
D. none of the Mentioned
Answer» B. ixmax