# Statistics MCQ Questions And Answers

This section focuses on "Statistics" in Data Science. These Statistics Multiple Choice Questions (MCQ) should be practiced to improve the Data Science skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. What is true about Statistics?

A. Statistics is used to process complex problems in the real world

B. Statistics is used to process simple problems in the virtual world

C. Statistics is used to process simple problems in the real world

D. None of the above

View Answer

Ans : A

Explanation: Statistics is used to process complex problems in the real world so that Data Scientists and Analysts can look for meaningful trends and changes in Data.

2. A variable may also be called a _______.

A. Data Set

B. Data Item

C. Data Value

D. Data variable

View Answer

Ans : B

Explanation: A Variable is any characteristics, number, or quantity that can be measured or counted. A variable may also be called a data item.

3. Which Analysis is known as Non-Statistical Analysis?

A. Quantitative Analysis

B. Qualitative Analysis

C. Both A and B

D. None of the above

View Answer

Ans : B

Explanation: Qualitative or Non-Statistical Analysis gives generic information and uses text, sound and other forms of media to do so.

4. __________Statistics uses the data to provide descriptions of the population, either through numerical calculations or graphs or tables.

A. Descriptive

B. Quantitative

C. Inferential

D. Qualitative

View Answer

Ans : A

Explanation: Descriptive Statistics uses the data to provide descriptions of the population, either through numerical calculations or graphs or tables.

5. Which language is commonly used with Statistics?

A. C

B. C++

C. Ruby

D. R

View Answer

Ans : D

Explanation: R language is commonly used with Statistics

6. What does it mean to weave a literate statistical program?

A. Convert a program from S to python

B. Convert the program into a human readable document

C. Convert a program to decompress it

D. None Of the above

View Answer

Ans : B

Explanation: Literate Statistical Programming can be done with knitr.

7. Which of the following tool documentation language is supported by knitr?

A. RMarkdown

B. LaTeX

C. HTML

D. Android

View Answer

Ans : A

Explanation: knitr is available on CRAN.

8. Point out the wrong statement.

A. A random variable is a numerical outcome of an experiment

B. Continuous random variable can take any value on the real line

C. There are three types of random variable

D. None of the above

View Answer

Ans : C

Explanation: There are two types of random variable-continuous and discrete.

9. What is true about Statistics In R?

A. Statistics In R is open-source and freely available

B. Statistics In R is cross-platform compatible.

C. Statistics In R is a powerful scripting language

D. All of the above

View Answer

Ans : D

Explanation: All is true regarding Statistics In R.

10. Which of the following inequality is useful for interpreting variances?

A. Chebyshev

B. Stautaory

C. Testory

D. None Of the above

View Answer

Ans : A

Explanation: Chebyshev's inequality is also spelled as Tchebysheff's inequality.

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