1.  Which of the following is not a mathematical average?

2. What is the major assumption that one makes when computing a mean from a grouped data ?

3. Which index number is used in a situation when one is willing to compare changes in the monetary value of consumption, sale, exports, etc., if a commodity on two or more points of time?

4. If the mean, median and mode of a data set are equal then, which of the following is true with regard to the distribution of the data ?

5. The 50^th percentile is-

6. Measures of central tendency are called averages

7. If the arithmetic mean of the ages of a group of boys is 20 years, then the arithmetic mean of their ages after 2 years will be

8. Which of the following statements is not true?

9. Which of the following statements is/are correct?

1. Average sale of a firm for different years can be better represented by mode.
2. Arithmetic mean is highly affected by extreme values.
3. Sum of absolute deviations from median is minimum.
4. All positional averages are mathematical acreages.

10. Which of the following statements is incorrect?