Business Statistics and Research Methods MCQs

Question 1

Rank correlation coefficient is obtained by following the formula.

Accepted Answer

$$1 - \frac{{6\sum {D^2}}}{{N\left( {{N^2} - 1} \right)}}$$

Answer

$$1 - \frac{{\sum {D^2}}}{{{N^3} - N}}$$

Answer

$$\frac{{6\sum {D^2}}}{{N\left( {{N^3} - N} \right)}}$$

Answer

$$1 + \frac{{6\sum {D^2}}}{{N\left( {{N^3} - N} \right)}}$$

Question 2

Match the following. List-I List-II a. Primary data 1. Representation of data in form of picture b. Secondary data 2. The totality of things under consideration c. Pictogram 3. Data collected by the investigator himself d. Population 4. Data used by the investigator, which has already been collected by others

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 3

For testing of hypothesis: Ho: Mi = M2 Ha: Mi < M2 What should be the critical value of Z at 5% level of significance when size of sample is more than 30 is:

Accepted Answer

1.645

Answer

1.96

Answer

2.32

Answer

2.5758

Question 4

Cricketer 'A' scores on an average 40 runs with a standard deviation of 5. Scores of players 'B' and 'C', on an average, are 75 and 90 with standard deviations 10 and 18 respectively. Arrange the players in the descending order of consistency:

Accepted Answer

A, B and C

Answer

C, B and A

Answer

B, A and C

Answer

C, A and B

Question 5

In least squares regression, which of the following is not a required assumption about the error term E?

Accepted Answer

The expected value of the error term is one

Answer

The variance of the error term is the same for all values of x

Answer

The values of the error term are independent

Answer

The error term is normally distributed

Question 6

In a unimodal and symmetric distribution, the relationship between average is like this.

Accepted Answer

Mean > Median > Mode

Answer

Mean Mode

Answer

Mean = Median = Mode

Answer

Mean > Median < Mode

Question 7

For a continuous frequency distribution, range is defined as

Accepted Answer

difference between the upper limit of the highest class and the lower limit of the smallest class

Answer

difference between the upper limit of the first class and lower limit of last class

Answer

difference between the upper limit of the highest class and lower limit of the highest class

Answer

None of the above

Question 8

The value of β2 can be:

Accepted Answer

All of the above

Answer

Less than 3

Answer

Greater than 3

Answer

Equal to 3

Question 9

In binomial distribution, if number oftrials (n) is infinitely large, the probability of success (p) of occurrence of an event is close to . . . . . . . . and probability of failure (q) of occurrence of an event close to . . . . . . . .

Accepted Answer

1, 0

Answer

0, 1

Answer

1, 1

Answer

None of these