Business Statistics and Research Methods MCQs

Question 1

In a Binomial Distribution, if 'n' is the number of trials and 'p' is the probability of success, then the mean value is given by:

Accepted Answer

np

Answer

n

Answer

p

Answer

np(1 - p)

Question 2

The first moment about means is always:

Accepted Answer

Zero

Answer

One

Answer

Negative

Answer

None of these

Question 3

Sampling is the process of study

Accepted Answer

about the population

Answer

about the sample

Answer

about the sample or about the population

Answer

neither about the sample nor about the population

Question 4

Assertion (A) In regression analysis, the values of the dependent variable are random, but the values of the independent variable are fixed quantities without error and are chosen by the analyst. Reason (R) Regression analysis provides value of the regressed variables (dependent) from the value of the regressor variables (independent variable).

Accepted Answer

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

Answer

Both (A) and (R) are true and (R) is the correct explanation of (A)

Answer

Both (A) and (R) are false

Answer

(A) is false, but (R) is true

Question 5

The term 'external validity' is concerned with:

Accepted Answer

the question of whether the results of a study can be generalized beyond the specific research context

Answer

whether the research question is judged to be a good research question by those outside the study

Answer

the question of whether or not social scientific findings are applicable to people's everyday, natural social settings

Answer

an ambiguous concept whose meaning depends on how it is defined

Question 6

A good index number is one that satisfies

Accepted Answer

Time Reversal Test and Factor Reversal Test

Answer

Unit test

Answer

Time test

Answer

None of these

Question 7

The following are the estimated regression equations for x and y variables: x = 0.85y y = 0.89x With this information, the value of the coefficient of correlation would be:

Accepted Answer

0.86

Answer

0.87

Answer

0.89

Answer

0.75

Question 8

The moment coefficient of skewness 'p1' is equal to

Accepted Answer

$$\frac{{{{\left( {q - p} \right)}^2}}}{{npq}}$$

Answer

$$\frac{{p - q}}{{npq}}$$

Answer

$$\frac{{q - p}}{{npq}}$$

Answer

$$\frac{{{{\left( {p - q} \right)}^2}}}{{npq}}$$

Question 9

The weight of 50 students in pounds are given below 82 95 120 174 179 176 159 91 85 175 88 160 97 133 159 176 151 115 105 172 170 128 112 101 123 117 93 117 99 90 113 119 129 134 178 105 147 107 155 157 98 117 95 135 175 97 160 168 144 175 If the data are arranged in the form of frequency distribution with class interval as 81-100, 101-120, 121-140, 141-160, 161-180, then the frequencies for these five classes will be Select the correct answer using the options given below

Accepted Answer

6, 9, 12, 12, 11

Answer

6, 9, 10, 11, 14

Answer

12, 11, 6, 9, 11

Answer

None of these