Business Statistics and Research Methods MCQs

Question 1

The source of data are

Accepted Answer

Primary and secondary

Answer

Only primary

Answer

Only secondary

Answer

None of these

Question 2

The sample mean is a:

Accepted Answer

Statistic

Answer

Parameter

Answer

Variable

Answer

Constant

Question 3

Number of peoplewatching TV at a given point of time is an example of

Accepted Answer

infinite population

Answer

finite population

Answer

defined population

Answer

None of these

Question 4

If correlation coefficient between two variables is uncertain, it implies that

Accepted Answer

r = 0

Answer

r = +1

Answer

r = -1

Answer

r = 0.5

Question 5

Which of the following is not an attribute under statistical analysis?

Accepted Answer

Height

Answer

Deafness

Answer

Beauty

Answer

Blindness

Question 6

The arithmetic mean of 10 items is 50. If each item is increased by 5, then new arithmetic mean would be

Accepted Answer

55

Answer

50

Answer

60

Answer

45

Question 7

Coefficient of variation is calculated by the formula:

Accepted Answer

$$\frac{\sigma }{x} 	imes 100$$

Answer

$$\frac{{\overline x }}{\sigma } 	imes 100$$

Answer

$$\frac{{\overline x }}{\sigma }$$

Answer

$$\frac{\sigma }{x}$$

Question 8

The median can be found by

Accepted Answer

Both of the above

Answer

$$M = {	ext{size of}}{\left( {\frac{{n + 1}}{2}} ight)^{{	ext{th}}}}{	ext{term}}$$

Answer

$$M = {l_1} + \frac{{{l_2} - {l_1}}}{f}\left( {m - c} \right)$$

Answer

None of the above

Question 9

In the margin of error, terms $$n = \frac{{Z_{1 - \frac{\alpha }{2}}^2{p^ * }{q^ * }}}{{{m^2}}}$$ here, $${P^ * }$$ stands for

Accepted Answer

population size

Answer

guess of proportion

Answer

probability of error

Answer

None of these