Business Statistics and Research Methods MCQs

Question 1

Which of the following is the tool of measures of the variation of items?

Accepted Answer

Dispersion

Answer

Mean

Answer

Median

Answer

Mode

Question 2

What is the main disadvantage of the standard deviation?

Accepted Answer

It is difficult to calculate by hand

Answer

It is used in many other statistical techniques

Answer

It takes into account all the valuesin the data set

Answer

It is a sensitive measure of dispersion

Question 3

Null hypothesis and alternatives hypothesis is denoted by

Accepted Answer

H0, H1 respectively

Answer

H1, H0 respectively

Answer

α, β respectively

Answer

None of these

Question 4

The regression equation of profits (X) on sales (Y) of a firm is given as: 3Y - 5X + 110 = 0. If the sales of the firm is Rs. 4,400, the profit will be

Accepted Answer

Rs. 26,422

Answer

Rs. 23,370

Answer

Rs. 24,422

Answer

Rs. 21,370

Question 5

Match the items of List-II with the items of List-I and select the option of correct matching. List-I List-II a. Chi-square test 1. Testing the significance of the differences of the mean values among more than two sample groups b. ANOVA (F-test) 2. Testing the goodness of fit of a distribution c. Z-test 3. Testing the significance of the difference of the mean values between two large sized samples d. T-test 4. Testing the significance of the difference of the mean values between two small sized samples when population standard deviation is not available

Accepted Answer

a-2, b-1, c-3, d-4

Answer

a-1, b-2, c-3, d-4

Answer

a-4, b-3, c-2, d-1

Answer

a-1, b-2, c-4, d-3

Question 6

Probable error extracted

Accepted Answer

$$0.6745\frac{{\left( {1 - {r^2}} \right)}}{{\sqrt N }}$$

Answer

$$\frac{{\left( {1 - {r^2}} \right)}}{{\sqrt N }}$$

Answer

$$\frac{{\left( {1 - {r^2}} \right)}}{N}$$

Answer

$$\frac{{\sqrt {\left( {1 - {r^2}} \right)} }}{{\sqrt N }}$$

Question 7

The age number of the students of a class are 15, 17,18, 20, 22, 24, 21, 17, 16, 15, 21, 22, 23, 22, 17, 22, 18, 22, 19 and 20. What will be mode of the series?

Accepted Answer

22

Answer

15

Answer

24

Answer

10

Question 8

Consider the following statistical tests. 1. 'F' test 2. 'T' test 3. 'Z' test 4. 'Chi-square' test Which of these are parametric tests?

Accepted Answer

1, 2 and 3

Answer

1, 2 and 4

Answer

1, 3 and 4

Answer

2, 3 and 4

Question 9

If correlation coefficient is 0.8 then the coefficient of alienation shall be-

Accepted Answer

0.6

Answer

0.44

Answer

0.4

Answer

0.64