1. In a series of 25 observations, Z (x – 7) = – 8. Then, mean is equal to-

2. Total wages paid to the workers in two factories A and B are the same but the modal wage in factory A is larger than the modalwage in factory B. In which factory workers are well off ?

3.  Which of the following would be an appropriate average for determining the average size of readymade garments ?

4. Most appropriate average to determine the size of oranges on a tree is-

5. Most appropriate average for qualitative measurement is-

6. The most unstable measure of central tendency is

7. The sum of deviations of observation is zero when measured from

8. The average, most affected by the extreme observations, is

9. The most stable average is

10. Which of the following is not true ?