Business Statistics and Research Methods MCQs

Question 1

Which of the following sraternent/s is/are correct?

Accepted Answer

All of the above

Answer

A statistic is a piece of data from a portion of a population

Answer

A parameter is data from a census

Answer

A census surveys everyone

Question 2

Which of the following statements is correct?

Accepted Answer

The variance is positive quantity and is expressed in square of the units of the observations

Answer

The standard deviation of a constant is equal to unity

Answer

The sum of absolute deviations is minimum if these deviations are taken from the mean

Answer

The second moment about origin equals variance

Question 3

Which one of the following statements is false?

Accepted Answer

Regression co-efficients are independent of both the origin and scale

Answer

Both correlation and regression co-efficients have same sign

Answer

Arithmetic mean of the regression co-efficients is always more than the correlation co-efficient

Answer

Correlation co-efficient is the square root of two regression co-efficients

Question 4

Which of the following statistical measures is based on all observations?

Accepted Answer

Harmonic mean

Answer

Range

Answer

Mode

Answer

None of these

Question 5

The area under normal distribution covered within μ ± 3σ limit is

Accepted Answer

0.9973

Answer

0.6827

Answer

0.9545

Answer

1

Question 6

Survey research is cross-sectional and as a result, it is:

Accepted Answer

low in internal validity but high in replicability

Answer

high in internal validity but low in reliability

Answer

none of the above

Answer

high in ecological validity but low in external validity

Question 7

Which kind of research is conducted to understand and resolve one's own problems?

Accepted Answer

Problem solving research

Answer

Qualitative research

Answer

Both A and B

Answer

None of the above

Question 8

Which of the following statement is/are correct? (1) Circle is a two dimensional diagram. (2) Frequency polygon represents cumulative frequency. Select the correct answer using the options given below

Accepted Answer

Only 1

Answer

Only 2

Answer

Both 1 and 2

Answer

Neither 1 nor 2

Question 9

Index for base period is always taken as

Accepted Answer

100

Answer

0

Answer

200

Answer

1000