Business Statistics and Research Methods MCQs

Question 1

A frequency distribution has three groups in which the total number of frequencies are 100, 125 and 150 and their mean are 20, 15 and 25 respectively. The collective mean of the entire distribution will be

Accepted Answer

20.3

Answer

22.3

Answer

20.8

Answer

19.3

Question 2

Which of the following is the first step in starting the research process?

Accepted Answer

Identification of problem

Answer

Searching sources of information to locate problem

Answer

Survey of related literature

Answer

Searching for solutions to the problem

Question 3

Null hypothesisis always . . . . . . . . while alternate hypothesis gives a/an . . . . . . . . value.

Accepted Answer

specific, approximate

Answer

specific, different

Answer

approximate, specific

Answer

None of these

Question 4

The mean wages of the first group workers is Rs. 15 and the number is 100. If the mean wage of the whole groups is Rs. 15.60 and the number of workers is 250, then the mean wages of the workers of the second group will be

Accepted Answer

Rs. 16

Answer

Rs. 14

Answer

Rs. 15

Answer

None of these

Question 5

In . . . . . . . ., size of the slice represents the proportion of the component out of the whole.

Accepted Answer

Both A and B

Answer

percentage bar diagram

Answer

pie chart

Answer

multiple bar diagram

Question 6

In order to apply correctly the χ2-test for goodness of fit, which of the following assumption is correct?

Accepted Answer

All of the above

Answer

The observed and theoretical distribution contain the same number of elements

Answer

No expected frequency be less then five

Answer

The observed values are taken from a random sample

Question 7

The positive time reversibility test is complete when

Accepted Answer

$${P_{01}} 	imes {P_{10}} = 1$$

Answer

$${P_{01}} 	imes {Q_{01}} = \frac{{\varepsilon {p_1}{q_1}}}{{\varepsilon {p_0}{q_0}}}$$

Answer

$${P_{10}} 	imes {P_{10}} = \frac{{\varepsilon {p_1}{q_1}}}{{\varepsilon {p_0}{q_0}}}$$

Answer

$${P_{01}} 	imes {Q_{01}} = 1$$

Question 8

Match the following items in List-I with most suitable options in List-II: List-I List-II a. Fisher 1. Inverse probability b. Karl Pearson 2. Normal Distribution c. Thomas Bayes 3. Correlation Coefficient d. Karl Gauss 4. Index Numbers

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 9

If the arithmetic mean is 25 and standard deviation 6.25 then coefficient of variation will be

Accepted Answer

25

Answer

20

Answer

30

Answer

50