INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY Quiz examination STA 240 Full marks: 100 (10x10)

1.

What do you mean by central tendency?

2.

What are the measures of central tendency?

Set: X Time: 50 minutes

3. Why AM is the best measure of central tendency? 4. Find the two numbers whose HM=32/5 and GM=8. 5. Find the mode for the series 1, 2, 3, ………… , 500.

6.

In what situations, HM and GM are not applicable?

7.

In what situations, median and mode are not applicable?

8.

What is the median of the sample 4,5,7,9,6,3,2, 5, 1, 9, 8, 5, 8?

9.

Find the mean for the series 1000, 2000, 3000, …………, 50000.

10.

Explain with a real life example how extreme values can affect the mean.

Md. Mortuza Ahmmed