Business Statistics and Research Methods MCQs

Question 1

Which one of the following is not a formula of standard deviation $$\left( \sigma \right)?$$

Accepted Answer

$$\sigma = \frac{1}{N}\sqrt {\sum {d^2}x - {{\left( {\sum dx} \right)}^2}} $$

Answer

$$\sigma = \frac{1}{N}\sqrt {\frac{{\sum {d^2}x}}{N} - {{\left( {\frac{{\sum dx}}{N}} \right)}^2}} $$

Answer

$$\sigma = \sqrt {\frac{{\sum {d^2}x}}{N} - {{\left( {\overline x - A} \right)}^2}} $$

Answer

$$\sigma = \sqrt {\frac{{\sum {d^2}x - N{{\left( {\overline x - A} \right)}^2}}}{N}} $$

Question 2

If one regression coefficient is greater than one, then other will be:

Accepted Answer

Less than one

Answer

More than one

Answer

Equal to one

Answer

Equal to minus one

Question 3

When there is either perfect positive correlation and either perfect negative correlation between the two variables the two regression lines will . . . . . . . .

Accepted Answer

coincide

Answer

overlap

Answer

Both A and B

Answer

None of these

Question 4

Which series is more suitable to represent by diagram?

Accepted Answer

Discrete series

Answer

Individual series

Answer

Continuous series

Answer

None of these

Question 5

There is a very high inverse relationship between measures of 'Overweight' and 'life expectancy'. Which one of the following value of the coefficient of correlation is consistent with the statement?

Accepted Answer

-0.8

Answer

0.8

Answer

0.2

Answer

-0.2

Question 6

A research paper is a brief report of research work based on:

Accepted Answer

Both Primary and Secondary Data

Answer

Primary Data only

Answer

Secondary Data only

Answer

None of the above

Question 7

Which one of these variables is a binomial random variable?

Accepted Answer

number of women taller than 68 inches in a random sample of 5 women

Answer

time it takes a randomly selected student to complete a multiple-choice exam

Answer

number of textbooks a randomly selected student bought this term

Answer

number of CDs a randomly selectedperson owns

Question 8

'Number summary' is published in Uttar Pradesh:

Accepted Answer

Yearly

Answer

Monthly

Answer

Quarterly

Answer

Weekly

Question 9

Which one of the following objectives is not the objective of secondary data collection?

Accepted Answer

Test the hypotheses of the relevant present problem

Answer

Identity the problem

Answer

Better define the problem

Answer

Interpret primary data more insightfully