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Statistics for Data Science I, End Term

September 2022 term, 11 Dec 2022, Set ETF1-2

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Question 1

+2−0Multiple correct

Which of the following statement(s) is/are correct?

Select all that apply

Select all that apply.

A.
Descriptive statistics can be performed only on population data.
B.
Inferential statistics can be performed on both population data and sample data.
C.
Descriptive statistics can be performed on both population data and sample data.
D.
Inferential statistics cannot be performed on population data.

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Which of the following statement(s) is/are correct? Consider the experiment of selecting a three-child family at random. If *‘b’* denotes of being a boy and *‘g’* denotes of being a girl, then find the possible values of the event “The first born is a girl”? If *X* and *Y* are independent Poisson random variables with expectations 3 and 5 respectively, then find the variance of 2*X* + *Y* .