Business Statistics and Research Methods MCQs

Question 1

If an event cannot take place, probability will be

Accepted Answer

0

Answer

1

Answer

-1

Answer

None of these

Question 2

The curve of normal distribution is . . . . . . . . the horizontal axis.

Accepted Answer

unimodal

Answer

bimodal

Answer

multimodal

Answer

None of these

Question 3

Which two of the following statements are true? (1) The sum of the deviations from mean (ignoring algebraic signs) is greater than the sum of the deviations from median (ignoring algebraic signs) (2) Standard deviation is independent of change of origin and change of scale (3) In a symmetrical distribution, mean deviation equals 4/5 of standard deviation (4) In a symmetrical and bell shaped distribution, quartile deviation is 1/3 of standard deviation Choose the correct answer from the options given below

Accepted Answer

1 and 3

Answer

2 and 4

Answer

3 and 4

Answer

1 and 2

Question 4

Which amongst the given statement is true?

Accepted Answer

Law of inertia of large numbers is a corollary of law of statistical regularity

Answer

A well-sized random sample is not a good representative of the universe

Answer

Sampling errors are present both in the census as well as sample survey

Answer

While taking a purposive sample, the items are seletcted at random

Question 5

Coefficient of variation is one of the following

Accepted Answer

$$\frac{{L - S}}{{L + S}}$$

Answer

$$\frac{{L + S}}{{L - S}}$$

Answer

$$\frac{{L + S}}{2}$$

Answer

$$\frac{{L - S}}{2}$$

Question 6

Which of the following is related to positive association of attributes?

Accepted Answer

Health and hygiene

Answer

Honesty and boldness

Answer

Vaccination and Occurrence of disease

Answer

Health and Honesty

Question 7

Which of the following is not an example of a discrete probability distribution?

Accepted Answer

The sale or purchase price of a house

Answer

The number of bedrooms in a house

Answer

The number of bathrooms in a house

Answer

Whether or not a home has a swimming pool in it

Question 8

The mean of 200 terms is 48 and the standard deviation is 3. The sum of the squares of these terms will be-

Accepted Answer

462600

Answer

46260

Answer

28800

Answer

154200

Question 9

Which of the following can be calculated from a cumulative frequency curve?

Accepted Answer

Median

Answer

Geometric mean

Answer

Harmonic mean

Answer

Mode