Business Statistics and Research Methods MCQs

Question 1

The measure of variation that is least effected by extreme observations is

Accepted Answer

Mean deviation

Answer

Range

Answer

Standard deviation

Answer

Quartile deviation

Question 2

Which one of the following is not the characteristics of normal distribution?

Accepted Answer

The two tails of the distribution in both the directions touches the horizontal axis

Answer

Bell-shaped and symmetric

Answer

Mean, Median and Mode of the distribution are equal

Answer

The total area under the curve for the normal probability distribution is one

Question 3

Which of the following is correct formula to calculate 'width of the class'?

Accepted Answer

Class range ÷ Number of classes

Answer

Class range × Number of classes

Answer

Class range ÷ Total number of sample

Answer

None of the above

Question 4

The following figures represent the number of book issued at the counter of a commerce library in 11 different ways. Calculate the median. 96, 180, 98, 75, 270, 20, 102, 100, 94, 75, 200

Accepted Answer

96

Answer

98

Answer

100

Answer

102

Question 5

In regression analysis, if the independent variable is measured in kilograms, the dependent variable:

Accepted Answer

can be any units

Answer

must also be in kilograms

Answer

must be in some unit of weight

Answer

cannot be in kilograms

Question 6

A set of data can be distinguished from other set of data by means of:

Accepted Answer

Central value, dispersion, skewness and Kurtosis

Answer

Central value and dispersion

Answer

Central value, dispersion and skewness

Answer

None of the above

Question 7

The dependent variable is also called:

Accepted Answer

All of these

Answer

Regressand variable

Answer

Predict and variable

Answer

Explained variable

Question 8

In using the T-test, we assume which of the following?

Accepted Answer

All of the above

Answer

Population is normal or approximately normal

Answer

Observations are independent and samples are randomly drawn

Answer

There is no measurement error

Question 9

. . . . . . . . error are made when we accept a null hypothesis which is not true.

Accepted Answer

Type II

Answer

Type I

Answer

Both A and B

Answer

None of these