Business Statistics and Research Methods MCQs

Question 1

In which of the following forecasting technique, data obtained from past experience is analysed?

Accepted Answer

Time series forecast

Answer

Judgemental forecast

Answer

Associative forecast

Answer

All of the above

Question 2

Research methodology refers to the . . . . . . . . which are used to conduct an investigation.

Accepted Answer

methods

Answer

types

Answer

designs

Answer

All of the above

Question 3

A relationship where the flow of the data points is best represented by a curve is called:

Accepted Answer

Linear relationship

Answer

Nonlinear relationship

Answer

Linear positive

Answer

Linear negative

Question 4

The difference between sample statistic and its corresponding population parameter is:

Accepted Answer

Sampling error

Answer

Measurement error

Answer

Coverage error

Answer

Non-response error

Question 5

In a series, the value of arithmetic mean and median are 15 and 14 respectively the value of mode will be

Accepted Answer

12

Answer

42

Answer

30

Answer

14.5

Question 6

If E(x) is the mathematical expectation of the variable X and C is constant then E(CX) = ?

Accepted Answer

CE(x)

Answer

E(c) + E(x)

Answer

E(c) × E(x)

Answer

None of these

Question 7

Standard deviation can be expressed as

Accepted Answer

$$\sigma = \sqrt {\frac{{\sum {{\left( {x - \overline x } \right)}^2}}}{N}} $$

Answer

$$\frac{{\sum \left| {\overline x - x} \right|}}{N}$$

Answer

$$\frac{{\sum \left| {x - \overline x } \right|}}{N}$$

Answer

None of the above

Question 8

Bowley's Coefficient of skewness is calculated by following formula.

Accepted Answer

$$\frac{{{Q_3} + {Q_1} - 2M}}{{{Q_3} - {Q_1}}}$$

Answer

$$\frac{{{Q_3} + {Q_1} - M}}{{{Q_3} - {Q_1}}}$$

Answer

$$\frac{{{Q_3} + {Q_1} - 2M}}{{{Q_3} + {Q_1}}}$$

Answer

$$\frac{{{Q_3} + {Q_1} - 3M}}{{{Q_3} - {Q_1}}}$$

Question 9

Which of the following test is used to test the significance of the coefficient of association?

Accepted Answer

T-test

Answer

Z-test

Answer

Chi-square test

Answer

F-test