Business Statistics and Research Methods MCQs

Question 1

If the coefficient of determination is a positive value, then the regression equation:

Accepted Answer

could have either a positive or a negative slope

Answer

must have a positive slope

Answer

must have a negative slope

Answer

must have a positive y intercept

Question 2

Calculate the mean of marks of 46 students from the following table. Marks (X) Frequency 9 1 10 2 11 3 12 4 13 5 14 6 15 7 16 8 17 9 18 10 Total 55

Accepted Answer

15

Answer

12.01

Answer

14.56

Answer

None of these

Question 3

Concurrent deviation correlation coefficient is obtained by the following formula.

Accepted Answer

$$ \pm \sqrt { \pm \left( {\frac{{2c - n}}{n}} \right)} $$

Answer

$$ \pm \sqrt { \pm \left( {\frac{{2c + n}}{n}} \right)} $$

Answer

$$ \pm \sqrt { \pm 2\left( {\frac{{c - n}}{n}} \right)} $$

Answer

$$ \pm \sqrt { \pm 2\left( {\frac{{2c - n}}{n}} \right)} $$

Question 4

Arithmetic mean of 98 items is 50. Two items 60 and 70 were left out at the time of calculation. What will be the correct mean of all the items?

Accepted Answer

AM = 50.3

Answer

AM = 50.2

Answer

AM = 49.9

Answer

AM = 50.9

Question 5

Consider the following statements: 1. Median is not useful while dealing with skewed distribution such as income distribution or price distribution 2. Median can be determined graphically by drawing only one ogive 3. Mode can be used to describe qualitative phenomenon Which of the above statements are correct?

Accepted Answer

1 and 3

Answer

1 and 2

Answer

2 and 3

Answer

1, 2 and 3

Question 6

The median of a series is 10. Two additional observations will be 7 and 20 are added to this range. The median of new class will be

Accepted Answer

10

Answer

7

Answer

9

Answer

20

Question 7

The . . . . . . . . can be formed by dividing the frequency distribution by the total number of observations.

Accepted Answer

relative frequency distribution

Answer

cumulative frequency distribution

Answer

percentage frequency distribution

Answer

None of the above

Question 8

Match the following. List-I List-II a. Research type 1. Problem solving b. Research design 2. Feminist c. Research method 3. Survey

Accepted Answer

a-1, b-3, c-2

Answer

a-1, b-2, c-3

Answer

a-3, b-2, c-1

Answer

a-2, b-1, c-3

Question 9

Which of the following are considered nonparametric tests? 1. Mann-Whitney U test 2. Kruskal-Wallis test 3. F-test 4. T-test 5. Chi-square test Choose the correct option from the following:

Accepted Answer

1, 2 and 5

Answer

1, 2 and 3

Answer

1, 2, 3 and 4

Answer

1, 2, 3, 4 and 5