Business Statistics and Research Methods MCQs

Question 1

A survey determines that in a locality, 33% go to work by bike, 42% go by car, and 12% use both. The probability that a random person selected uses neither of them is:

Accepted Answer

0.37

Answer

0.29

Answer

0.61

Answer

0.75

Question 2

From the cumulative frequency diagram which one of the following types of average can be estimated?

Accepted Answer

Median

Answer

Geometric Mean

Answer

Harmonic Mean

Answer

Mode

Question 3

If for a sample data : Mean < Median < Mode, then the distribution is-

Accepted Answer

Skewed to the left

Answer

Skewed to the right

Answer

Symmetric

Answer

Neither symmetric nor skewed

Question 4

. . . . . . . . error is committed when the hypothesis is true but out test rejects it.

Accepted Answer

Type I

Answer

Type II

Answer

Both A and B

Answer

None of these

Question 5

The most appropriate measure of dispersion for open-ended sections is

Accepted Answer

Quartile deviation

Answer

Range

Answer

Mean deviation

Answer

Standard deviation

Question 6

Suppose 5 men out of 100 men and 10 women out of 250 women are colour blind, then find the total probability of colour blind people. (Assume that both men and women are in equal numbers.)

Accepted Answer

0.045

Answer

0.45

Answer

0.05

Answer

0.5

Question 7

Coefficient of quartile deviation is calculated by the formula

Accepted Answer

$$\frac{{{	heta _3} - {	heta _1}}}{{{	heta _3} + {	heta _1}}}$$

Answer

$$\frac{{{	heta _3} + {	heta _1}}}{4}$$

Answer

$$\frac{{{	heta _3} + {	heta _1}}}{2}$$

Answer

$$\frac{{{	heta _3} + {	heta _1}}}{{{	heta _3} - {	heta _1}}}$$

Question 8

The correlation co-efficient of (O) indicates

Accepted Answer

perfect correlation

Answer

no correlation

Answer

negligible correlation

Answer

none of these

Question 9

If probable error is 0.05 and N = 16 then find the correlation coefficient

Accepted Answer

8386

Answer

4745

Answer

4292

Answer

8034