Business Statistics and Research Methods MCQs

Question 1

While testing the significance of the difference of two sample means in case of small samples, the degrees of freedom is calculated by:

Accepted Answer

v = n1 + n2 - 2

Answer

v = n1 + n2 - 1

Answer

v = n1 - n2 - 2

Answer

v = n1 - n2 + 2

Question 2

If 'F' is quite large the null hypothesis of equal population means will have to be

Accepted Answer

rejected

Answer

accepted

Answer

Neither A nor B

Answer

Both A and B

Question 3

In regression analysis, the variable that is being predicted is the:

Accepted Answer

response, or dependent, variable

Answer

independent variable

Answer

intervening variable

Answer

is usually x

Question 4

Which one of the following is not included in the category of non-probability sampling?

Accepted Answer

Simple random sampling

Answer

Snow ball sampling

Answer

Convenience sampling

Answer

Purposive sampling

Question 5

The chronological development of information in the body of the report is done according to the:

Accepted Answer

order in which events occurred

Answer

collection of data

Answer

choice of the writer

Answer

logical sequence of events

Question 6

The correlation coefficient is the . . . . . . . . of two regression coefficients:

Accepted Answer

Geometric mean

Answer

Arithmetic mean

Answer

Harmonic mean

Answer

Median

Question 7

Arithmetic mean and harmonic mean includes all values of the data set in its calculation.

Accepted Answer

True

Answer

False

Answer

Partly true

Answer

None of these

Question 8

Regression lines intersect to each other

Accepted Answer

The point of the mean of X and Y

Answer

The point of the mean of X only

Answer

The point of the mean of Y only

Answer

The point of the median of X and Y

Question 9

Addition theorem states that if two events A and B are mutually exclusive the probability of occurrence of either A or B is given by:

Accepted Answer

P(A) + P(B)

Answer

P(A) × P(B)

Answer

P(A) - P(B)

Answer

None of these