1. If the data is qualitative, which of the following averages can be calculated?

2. Which of the following statements is correct ?

3. The mean marks of 100 students were found to be 40, Later on it was observed that score of 53 was misread as 83. What is the corrected mean corresponding to the corrected score ?

4. The median marks of 50 students were 60. But, later on it was found that the marks of a student who secured 75 were wrongly taken as 65. What is the correct median ?

5. One of the measures of dispersion which is more useful in case of open-ended distributions is

6. Standard deviation is always computed from

7. Mean deviation is

8. Coefficient of variation is given by

9. Quartile deviation is based on the-

10. If 25% of the items are less than 20 and 25% are more than 40, the quartile deviation is-