Commerce · all questions

Business Statistics and Research Methods
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

1,153

Questions

6/58

Page

Pick an option on a question to see the right answer and solution.

Q101

Open question

There is a very high inverse relationship between measures of 'overweight' and 'life expectancy'. Which one of the following value of the coefficient of correlation is consistent with the statement?

Select an option to see the answer and solution.

Q102

Open question

The formula to determine the number of classes given by Sturge's rule is which one of the following?
Where,

K

= Number of classes

N

=Total number of observations

(lo g N)

= Logarithm of the total number of observations

Select an option to see the answer and solution.

Q103

Open question

Which type of data is not suited for calculation of Karl Pearson's correlation coefficient?

Select an option to see the answer and solution.

Q104

Open question

Time series displays

Select an option to see the answer and solution.

Q105

Open question

A researcher wants to test the significance of the difference between the average performance of the two small sized samples when the information of the population standard deviation is not available, which one of the following hypothesis-testing is suitably used?

Select an option to see the answer and solution.

Q106

Open question

The standard deviation is independent of:

Select an option to see the answer and solution.

Q107

Open question

If the dependent variable increases as the independent variable increases in an estimating equation, the coefficient of correlation will be inthe range:

Select an option to see the answer and solution.

Q108

Open question

Where r is zero the regression lines but each other making an angle of

Select an option to see the answer and solution.

Q109

Open question

A survey determines that in a locality, 33% go to work by bike, 42% go by car, and 12% use both. The probability that a random person selected uses neither of them is:

Select an option to see the answer and solution.

Q110

Open question

From the cumulative frequency diagram which one of the following types of average can be estimated?

Select an option to see the answer and solution.

Q111

Open question

If for a sample data : Mean < Median < Mode, then the distribution is-

Select an option to see the answer and solution.

Q112

Open question

. . . . . . . . error is committed when the hypothesis is true but out test rejects it.

Select an option to see the answer and solution.

Q113

Open question

The most appropriate measure of dispersion for open-ended sections is

Select an option to see the answer and solution.

Q114

Open question

Suppose 5 men out of 100 men and 10 women out of 250 women are colour blind, then find the total probability of colour blind people. (Assume that both men and women are in equal numbers.)

Select an option to see the answer and solution.

Q115

Open question

Coefficient of quartile deviation is calculated by the formula