Business Statistics and Research Methods MCQs

Question 1

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 2

The value of third quartile will be equal to

Accepted Answer

75 th decile

Answer

1.5 of median

Answer

Third decile

Answer

None of these in above

Question 3

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 4

Consider the following statements. Statement-I: When a null hypothesis gets rejected in statistical hypothesis testing, it is known as II type error in hypothesis testing. Statement-II: When a sample is small sized and parametric value of the standard deviation is not known, z-test is the most appropriate test for hypothesis testing.

Accepted Answer

Both statements are incorrect

Answer

Both statements are correct

Answer

Statement-I is correct while starement-II is incorrect

Answer

Statement-I is incorrect while sratement-II is correct

Question 5

Match the following. List-I List-II a. Primary data 1. Representation of data in form of picture b. Secondary data 2. The totality of things under consideration c. Pictogram 3. Data collected by the investigator himself d. Population 4. Data used by the investigator, which has already been collected by others

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 6

Consider the following statements. Statement (I): If the alternative hypothesis is as Ha: μ ≠ μ0; a researcher requires two-tailed test in hypothesis-testing. Statement (II): The mean of the sampling distribution of mean is not equal to the parametric value of mean.

Accepted Answer

Statement (I) is true, while statement (II) is false

Answer

Both the statements are true

Answer

Both the statements are false

Answer

Statement (I) is false,while statement (II) is true

Question 7

If 'm' is the mean of a Poisson Distribution, the standard deviation is given by

Accepted Answer

√m

Answer

m 2

Answer

m

Answer

$$\frac{{	ext{m}}}{2}$$

Question 8

The formula for percentile range (P.R.) is

Accepted Answer

P 90 - P 10

Answer

P 50 - P 30

Answer

P 75 - P 25

Answer

None of these

Question 9

The Standard deviation of Poisson distribution is: (m = mean)

Accepted Answer

√m

Answer

m

Answer

m 2

Answer

1/√m

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

List-I	List-II
a. Primary data	1. Representation of data in form of picture
b. Secondary data	2. The totality of things under consideration
c. Pictogram	3. Data collected by the investigator himself
d. Population	4. Data used by the investigator, which has already been collected by others