Business Statistics and Research Methods MCQs

Question 1

Regression analysis measures:

Accepted Answer

Functional relationship between X and Y variable

Answer

The magnitude of the covariance between the X and Y series

Answer

Variance of Y series

Answer

Variance of X series

Question 2

Match the following. List-I List-II a. Diagrammatic representation 1. Geographical, chronological, qualitative, quantitative b. Graphic representation 2. Ungrouped, grouped c. Frequency distribution 3. Bar diagram, pie chart, pictogram d. Classification of data 4. Histogram, frequency polygon, ogive

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 3

Which of the following is correct? 1. Large sample, n > 30 2. Small sample, n < 20 3. Probability of type I error (α) is also called significance level of least. 4. Accepting the null hypothesis, when it is false is called type II error. Select the correct answer using the options given below

Accepted Answer

1, 3 and 4

Answer

1, 2 and 3

Answer

2, 3 and 4

Answer

All of the above

Question 4

Which of the following are the positional averages? 1. Mean 2. Median 3. Mode

Accepted Answer

Both 2 and 3

Answer

Both 1 and 2

Answer

Both 1 and 3

Answer

1, 2 and 3

Question 5

Which of the following is correct?

Accepted Answer

$$Z = 3M - 2\overline X $$

Answer

$$M = 3Z - 2\overline X $$

Answer

$$\overline X = 3Z - 2M$$

Answer

$$M = \overline X - 3Z$$

Question 6

If A $$ \subset $$ B, then:

Accepted Answer

P(A) ≥ P(B)

Answer

P(a) > P(b)

Answer

P(B) = P(A)

Answer

P(B) = P(B)

Question 7

The best mean for construction of index is

Accepted Answer

Geometric mean

Answer

Median

Answer

Arithmetic mean

Answer

None of these

Question 8

For a sampling theorem with mean μ, confidence interval should be

Accepted Answer

(X ± Z - α SEM)

Answer

(X + Z - α SEM)

Answer

(X - Z - α SEM)

Answer

None of these

Question 9

Variance of a sampling distribution with mean μ is

Accepted Answer

σ2/n

Answer

σ/n

Answer

n/σ2

Answer

None of these