Business Statistics and Research Methods MCQs

Question 1

The average height of 100 selected students is 168.8 cm and their coefficient of variation is 3.2%. What is the standard deviation of their height?

Accepted Answer

5.4016

Answer

514

Answer

521

Answer

524.61

Question 2

. . . . . . . . state that other things being equal, as the sample size increases, the result tends to be more reliable and accurate.

Accepted Answer

Law of inertia of large numbers

Answer

Principle of statistical regularity

Answer

Principle of representativeness

Answer

None of the above

Question 3

The number of times each score occurs is called . . . . . . . .

Accepted Answer

frequency

Answer

cumulation

Answer

range

Answer

None of these

Question 4

There will be only one regression line in case of two variables if

Accepted Answer

r = ± 1

Answer

r = 0

Answer

r = 0.5

Answer

None of them

Question 5

When the quantitative and qualitative data are arranged according to a single feature, the tabulation is known as:

Accepted Answer

One-way

Answer

Bivariate

Answer

Manifold-division

Answer

Dichotomy

Question 6

If A and B are two independent events in a sample group, then P (A and B) is equal to

Accepted Answer

P(A) × P(B)

Answer

P(B/A)

Answer

P(A) + P(B)

Answer

P(A/B)

Question 7

Statistical data are used for knowing about the progress in the

Accepted Answer

All of these

Answer

techniques of production

Answer

volume of production

Answer

imports and exports

Question 8

With reference to the value of Q3 which of the following statement is/are correct? (1) 1.5 of mean $$\left( {\overline X } \right)$$ (2) 75th percentile Choose the correct answer from the options give below

Accepted Answer

Only 2

Answer

Only 1

Answer

Both 1 and 2

Answer

Neither 1 nor 2

Question 9

Sampling is the proces of learning about the

Accepted Answer

population

Answer

sample

Answer

Both A and B

Answer

None of these