Business Statistics and Research Methods MCQs

Question 1

Dispersions are NOT calculated about

Accepted Answer

Geometric Mean

Answer

Mean

Answer

Median

Answer

Mode

Question 2

Laspreyer's formula

Accepted Answer

$${L_{p01}} = \frac{{\sum {P_1}{q_0}}}{{\sum {P_0}{q_0}}} 	imes 100$$

Answer

$${L_{p01}} = \frac{{\sum {P_1}{q_0}}}{{\sum {P_1}{q_1}}} 	imes 100$$

Answer

$${L_{p01}} = \frac{{\sum {P_1}{q_0}}}{{\sqrt {\sum {P_1}{q_1}} }} 	imes 10$$

Answer

None of these

Question 3

Regression analysis is a measure of

Accepted Answer

Cause and effect relationship

Answer

Degree and direction of relationship

Answer

Degree of association

Answer

None of these

Question 4

Which of the following statements are true? Select the correct option. (1) The coefficient of rank correlation has the same limits as the Karl Pearson's coefficient of correlation. (2) The coefficient of correlation is independent of the change of origin but not of scale. (3) The covariance between X and Y is defined as where and n = number of paired observations. (4) Bxy is called regression coefficient of X variable on Y variable. (5) If bxy is 0.4 and byx is 1.6, coefficient of determination would be 0.8.

Accepted Answer

1, 3 and 4

Answer

1, 2 and 3

Answer

3, 4 and 5

Answer

2, 3 and 5

Question 5

Which of the following is not a restricted random sampling technique?

Accepted Answer

Simple random sampling

Answer

Stratified sampling

Answer

Systematic sampling

Answer

Multi-stage sampling

Question 6

If 'p', 'g' and 'n' are probability of success, failure and number of trials respectively in a Binomial Distribution, what is its Standard Deviation?

Accepted Answer

$$\sqrt {npq} $$

Answer

$$\sqrt {np} $$

Answer

$$\sqrt {pq} $$

Answer

$${\left( {np} \right)^2}$$

Question 7

Arrange the following steps in sequence in constructing a frequency distribution. 1. The classes should be clearly defined and each observations should be included in only one of class interval. 2. Check that the number of classes should neither be too large nor too small. 3. Check that all class intervals are of same width. 4. List the value of the variable in different class interval. Select the correct answer using the options given below

Accepted Answer

1, 3, 2, 4

Answer

1, 2, 3, 4

Answer

1, 4, 3, 2

Answer

2, 1, 3, 4

Question 8

In calculating the regression equation linking two variables, the standard formulae for the regression coefficients are given in terms of X and Y. Which of the following is true?

Accepted Answer

Y must be the dependent variable

Answer

X must be the variable which will be forecast

Answer

It does not matter which variable is which

Answer

Y must be the variable shown on the vertical axis of a scatter graph

Question 9

In a questionnaire, how many answers should be there for simple alternative questions?

Accepted Answer

Two

Answer

Three

Answer

No

Answer

Many