Business Statistics and Research Methods MCQs

Question 1

What is the measure of relative dispersion?

Accepted Answer

Coefficient of variation

Answer

Relative coefficient

Answer

Absolute coefficient

Answer

Dispersion relativity

Question 2

If 'x' and 'y' are independent variables, then the two lines of regression are

Accepted Answer

x = constant, y = constant

Answer

x = 0, y = 0

Answer

x = 0, y = constant

Answer

None of these

Question 3

If $$x = X - \overline X $$ and $$y = Y - \overline Y $$ be n number of pair terms, then

Accepted Answer

$$r = \frac{{\sum xy}}{{\sqrt {\sum {x^2}\sum {y^2}} }}$$

Answer

$$r = \frac{{n\sum xy}}{{\sqrt {\sum {x^2}\sum {y^2}} }}$$

Answer

$$r = \frac{{\sum xy}}{{n\sqrt {\sum {x^2}\sum {y^2}} }}$$

Answer

$$r = \frac{{\sum xy}}{{n\sum {x^2}}}$$

Question 4

If expected frequency in a cell is less than 5, we combine adjacent cells, so that make it 5 or more than

Accepted Answer

5

Answer

10

Answer

-5

Answer

100

Question 5

In the hypothesis testing procedure, a researcher may commit type II error in which of the following conditions?

Accepted Answer

When the false null hypothesis is accepted

Answer

When the true null hypothesis is rejected

Answer

When the alternative hypothesis is accepted

Answer

When the true null hypothesis is accepted

Question 6

A graph of a cumulative frequency distribution is called:

Accepted Answer

Ogive

Answer

Frequency polygon

Answer

Frequency curve

Answer

Pie diagram

Question 7

The formula for coefficient of variation-

Accepted Answer

$$\frac{{{	ext{Standard Deviation}}}}{{{	ext{Mean}}}} 	imes 100$$

Answer

$$\frac{{{	ext{Mean}}}}{{{	ext{Standard Deviation}}}} 	imes 100$$

Answer

$$\frac{{{	ext{Mean}} - {	ext{Mode}}}}{{{	ext{Standard Deviation}}}} 	imes 100$$

Answer

$$\frac{{{	ext{Standard Deviation}}}}{{{	ext{Mean}} - {	ext{Mode}}}} 	imes 100$$

Question 8

What type of correlation exists in the following two variates? X 1 2 3 4 5 6 Y 10 12 14 16 18 20

Accepted Answer

1

Answer

-1

Answer

0

Answer

±1

Question 9

Under which of the following situations, chi-square test is applicable? 1. Testing homogenity 2. Testing goodness of fit 3. Testing equality of two sample means 4. Testing equality of two sample proportions 5. Testing independence of attributes Select the correct answer using the options given below

Accepted Answer

1, 2 and 5

Answer

1, 2 and 3

Answer

3, 4 and 5

Answer

1, 3 and 5