Business Statistics and Research Methods MCQs

Question 1

The first three moments of a distribution about the mean X are 1, 4 and 0. The distribution is:

Accepted Answer

Symmetrical

Answer

Skewed to the left

Answer

Skewed to the right

Answer

Normal

Question 2

Mode is a positional average which is used to deal with which type of data? 1. Quantitative data 2. Qualitative data

Accepted Answer

Only 1

Answer

Only 2

Answer

Both 1 and 2

Answer

None of the above

Question 3

Assertion (A) The two lines of regression can never be parallel. Reason (R) The two lines of regression always pass through common point (x · y). Therefore, they can never be parallel.

Accepted Answer

Both (A) and (R) are true and (R) is the correct explanation of (A)

Answer

(A) is true, but (R) is false

Answer

(R) is true, but (A) is false

Answer

Both (A) and (R) are false

Question 4

Statistical mean, which is not affected by extreme values

Accepted Answer

Median

Answer

Arithmetic mean

Answer

Harmonic mean

Answer

Geometric mean

Question 5

The farther the two regression lines cut each other

Accepted Answer

the lesser will be degree of correlation

Answer

the greater will be the degree of correlation

Answer

does not really matter

Answer

None of them

Question 6

Which of the following is correct in a negatively skewed distribution?

Accepted Answer

(Q3 - Median) < (Median - Q1)

Answer

The arithmetic mean is greater than the mode

Answer

The arithmetic mean is greater than the median

Answer

(Q3 - Median) = (Median - Q1)

Question 7

Which of the following conditions need to be fulfilled for applicability of T- test?

Accepted Answer

The population standard deviation must be unknown

Answer

The sample size is less than 30

Answer

Both A and B

Answer

Neither A nor B

Question 8

Statistical average has significance due to following sequence. 1. To present huge mass of data ina summarised form. 2. To facilitate comparison of different sets of data. 3. To help decision-making. Select the correct answer using the options given below

Accepted Answer

1, 2, 3

Answer

2, 3, 1

Answer

2, 1, 3

Answer

3, 2, 1

Question 9

We call the classification of employees on the basis of education and attributes

Accepted Answer

Two-way classification or bidirectional classification

Answer

Multivariate classification or multidirectional classification

Answer

One-way classification

Answer

Time series