Business Statistics and Research Methods MCQs

Question 1

Karl Pearson's co-efficient of correlation between two variables is:

Accepted Answer

the square root of the product of their regression coefficients

Answer

the product of their standard deviations

Answer

the co-variance between the variables

Answer

none of the above

Question 2

The values of mean, median and mode are the same

Accepted Answer

In a symmetric distribution

Answer

In a positively skewed distribution

Answer

In a negatively skewed distribution

Answer

All of them

Question 3

Under which theoretical distribution, the quartile deviation is 2/3 of Standard Deviation?

Accepted Answer

Normal Distribution

Answer

Binomial Distribution

Answer

Poisson Distribution

Answer

Random Distribution

Question 4

. . . . . . . . is known as the 'ideal' formula for constructing index numbers.

Accepted Answer

Fisher's Ideal Index

Answer

Laspeyre's Index

Answer

Paasche's Index

Answer

None of these

Question 5

Which is used when sample size is small?

Accepted Answer

t-test

Answer

mode

Answer

F-test

Answer

none of these

Question 6

The arithmetic mean of 9, 17, 91 is

Accepted Answer

39

Answer

17

Answer

91

Answer

9

Question 7

In . . . . . . . ., a hypothesis should explain all sufficient facts needed to understand the problem.

Accepted Answer

empirical reference

Answer

logical reference

Answer

Both A and B

Answer

Neither A nor B

Question 8

The Karl Pearson's coefficient of correlation can be computed between

Accepted Answer

Two Variables

Answer

Two Attributes

Answer

Two Numbers

Answer

Two Assumptions

Question 9

There is a correlation between weight gain with age

Accepted Answer

Positive

Answer

Linear

Answer

Curvey linear

Answer

Negative