Business Statistics and Research Methods MCQs

Question 1

. . . . . . . . asserts that there is not true difference in the sample and the population in the particular matter under consideration.

Accepted Answer

Null hypothesis

Answer

Alternate hypthesis

Answer

Both A and B

Answer

None of these

Question 2

Which of the following is not a source of secondary data?

Accepted Answer

Observation

Answer

Newspaper

Answer

Website

Answer

Journals and magazines

Question 3

Which empirical relation is correct?

Accepted Answer

Mean deviation = $$\frac{4}{5}$$ (Standard deviation)

Answer

Mean deviation = $$\frac{3}{4}$$ (Standard deviation)

Answer

Mean deviation = $$\frac{4}{3}$$ (Standard deviation)

Answer

Mean deviation = $$\frac{5}{4}$$ (Standard deviation)

Question 4

Which of the following sratement/s is/are true in context of categorization?

Accepted Answer

Both A and B

Answer

The main mathematical averages are arithmetic mean, geometric mean and harmonic mean

Answer

The averages of position are median, mode and partition values - quartiles, deciles, percentiles, etc

Answer

None of the above

Question 5

How many quartiles can be counted in a series?

Accepted Answer

3

Answer

2

Answer

4

Answer

None of these

Question 6

Standard error of number of successes is given by:

Accepted Answer

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

Answer

$$\sqrt {\frac{{{	ext{pq}}}}{{	ext{n}}}} $$

Answer

npq

Answer

n2 p2

Question 7

If first and third quartile is 40 and 80 respectively. The median is

Accepted Answer

60

Answer

50

Answer

45

Answer

70

Question 8

The inter quartile range:

Accepted Answer

Is representative of the middle 50% of values in the data set

Answer

Relieson four values, and therefore, does not provide a measure of dispersion

Answer

Can be calculated by subtracting the median from the fourth quartile

Answer

Is normally used when the measure of central tendency is the mode

Question 9

The relationship between expenditure in Rs. on advertising (X) in one time period and sales in Rs. (Y) in the next period has been found to be Y = 50 + 7X. Which of the following interprets the value 7 correctly?

Accepted Answer

For every Rs. 1 spent on advertising, sales increase by Rs. 7 on average

Answer

For every Rs. 1 increase in sales, Rs. 7 must on average be spent on advertising

Answer

For every Rs. 1 spent on advertising, sales increase by Rs. 8

Answer

When advertising is zero, sales are Rs. 50/7