Business Statistics and Research Methods MCQs

Question 1

When a data series is arranged in ascending or descending order, the value which comes in the middle of the series is called?

Accepted Answer

Median

Answer

Mode

Answer

Mean

Answer

Geometric mean

Question 2

Range of the coefficient of correlation is:

Accepted Answer

±1.0

Answer

±0.25

Answer

±0.5

Answer

±0.2

Question 3

Which of the following statements is false?

Accepted Answer

The regression coefficients are independent of the change of origin and of scale

Answer

When value of correlation coefficient is one, the two regression lines coincide

Answer

The sign of the regression coefficients are always the same

Answer

The square of the coefficient of correlation is called coefficient of determination

Question 4

Questionnaire should have the following number of questions.

Accepted Answer

According to the information required

Answer

9

Answer

10

Answer

20

Question 5

Given the following numbers 2, 8, 6, 5, 0, 9, 7, 11 The product of their arithmetic and geometric means is

Accepted Answer

0

Answer

64

Answer

16

Answer

6

Question 6

The standard deviation of Bionomial distribution is:

Accepted Answer

$$\sqrt {{	ext{npq}}} $$

Answer

npq

Answer

n2p2q2

Answer

np

Question 7

In a place, average rainfall was 6 cm during Monday to Saturday. Due to heavy rainfall on Sunday the average of the week was increased to 9 cm. The rainfall on Sunday will be:

Accepted Answer

27 cm

Answer

25.5 cm

Answer

28.5 cm

Answer

None of the above

Question 8

The coefficient of correlation is independent of change of

Accepted Answer

Both A and B

Answer

Origin

Answer

Scale

Answer

None of these

Question 9

Karl Pearson's coefficient of skewness is . . . . . . . . Bowley's coefficient of skewness for any skewed distribution.

Accepted Answer

not related to

Answer

equal to

Answer

less than

Answer

greater than