Business Statistics and Research Methods MCQs

Question 1

The special rule of multiplication of probability, the events must be:

Accepted Answer

Independent

Answer

Mutually Exclusive

Answer

Bayesian

Answer

Empirical

Question 2

In case of three attributes the total number of classes will be

Accepted Answer

27

Answer

9

Answer

12

Answer

3

Question 3

If in two series the change occurs in same direction (either increase or decrease) then correlation is

Accepted Answer

positive

Answer

negative

Answer

zero

Answer

None of these

Question 4

The power of the statistical hypothesis testing is denoted by

Accepted Answer

1 - β

Answer

α (alpha)

Answer

β (beta)

Answer

1 - α

Question 5

Which of the following is not a subsidiary part of a formal report?

Accepted Answer

Appendix

Answer

Table of contents

Answer

Glossary

Answer

References

Question 6

Which of the following formula is not correct? Select your answer from the options given below

Accepted Answer

$${b_{yx}} = r\frac{{{\sigma _x}}}{{{\sigma _y}}}$$

Answer

$$r = \sqrt {{b_{xy}} 	imes {b_{yx}}} $$

Answer

$${b_{xy}} = r\frac{{{\sigma _x}}}{{{\sigma _y}}}$$

Answer

$$y - \overline y = r\frac{{{\sigma _x}}}{{{\sigma _y}}}\left( {x - \overline x } \right)$$

Question 7

If a card is drawn from a pack of Cards the probability of getting either a king or a queen is . . . . . . . .

Accepted Answer

$$\frac{2}{{13}}$$

Answer

$$\frac{5}{{15}}$$

Answer

$$\frac{1}{4}$$

Answer

None of the above

Question 8

If a number of chi-square values have been obtained from a number of samples similar data, then because of the additive nature of chi-square we can combine the various values of chi-square by just simply . . . . . . . . them.

Accepted Answer

adding

Answer

subtracting

Answer

multiplying

Answer

None of these

Question 9

For a Poisson's distribution with n = 200, P = 0.02, the mean is-

Accepted Answer

4

Answer

20

Answer

40

Answer

10