Business Statistics and Research Methods MCQs

Question 1

"Statistics is the king of sciences" who said?

Accepted Answer

Fisher

Answer

Pareta

Answer

King

Answer

Bowley

Question 2

Which one relation is not true?

Accepted Answer

$$\overline X = \frac{1}{3}\left( {2M - Z} \right)$$

Answer

$$Z = 3M - 2\overline X $$

Answer

$$M = \frac{1}{3}\left( {2\overline X - Z} \right)$$

Answer

$$\overline X = \frac{1}{2}\left( {3M - Z} \right)$$

Question 3

Two common forms of statistical inference are

Accepted Answer

Both A and B

Answer

estimation

Answer

null hypothesis tests of significance

Answer

None of the above

Question 4

Match the following. List-I List-II a. $${\beta _1}$$ 1. $${\beta _2} - 3$$ b. $${\beta _2}$$ 2. $$\frac{{\mu _3^2}}{{\mu _2^3}}$$ c. $${\gamma _1}$$ 3. $$\frac{{{\mu _4}}}{{\mu _2^2}}$$ d. $${\gamma _2}$$ 4. $$\sqrt {{\beta _1}} $$

Accepted Answer

a-2, b-3, c-4, d-1

Answer

a-1, b-3, c-4, d-2

Answer

a-3, b-2, c-1, d-4

Answer

a-1, b-2, c-3, d-4

Question 5

If Σx = 12, Σy = 42, Σx2 = 46, Σy2 = 542, Σxy = 157 and n = 4, find the correlation coefficient.

Accepted Answer

0.98

Answer

0.67

Answer

0.78

Answer

0.45

Question 6

If two events (both with probability greater than 0) are mutually exclusive, then:

Accepted Answer

They also could be complements

Answer

They also must be complements

Answer

They cannot be complements

Answer

None of the above

Question 7

When the regression coefficient is positive the other will be

Accepted Answer

Positive

Answer

Negative

Answer

Zero

Answer

None of these

Question 8

In a normal distribution the points of inflexion occur at . . . . . . . .

Accepted Answer

$$\overline X + \sigma $$

Answer

$$\overline X + 2\sigma $$

Answer

$$\overline X + 3\sigma $$

Answer

None of these

Question 9

Which of the following statement is true about Kruskal-Wallis test?

Accepted Answer

The null hypothesis of the Kruskal-Wallis list is not that the means are the same

Answer

The alternative hypothesis of the Kruskal-Wallis test is the same as the mean

Answer

The alternative hypothesis of the Kruskal-Wallis test is the same as variable

Answer

The null hypothesis of the same as alternative hypothesis