INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY Quiz examination STA 240 Full marks: 100 (10x7+30)

Set: X Time: 50 minutes

1.

In what situations, measures of central tendency are not appropriate?

2.

What are the measures of dispersion?

3. When should we use coefficient of variation (CV)? 4. Find CV of two numbers 5 and 3. 5. Find CV for the series 1, 2, 3, ………… , 10. 6.

If SD of 1st n natural numbers is √10, what will be the mean?

7.

Find MD and SD of the numbers 0, 1, 2.

8.

For any two numbers, GM=√7 and SD=3.

a) Find the numbers. b) Find HM. c) Find MD. d) Find variance. e) Find median. f) Find AM. g) Find CV.

Md. Mortuza Ahmmed