The sum of deviations taken from mean is:
AAlways equal to zero
BSome times equal to zero
CNever equal to zero
DNone of the above
AAlways equal to zero
BSome times equal to zero
CNever equal to zero
DNone of the above
Related Questions:
The table below shows that employees in an office , sorted according to their age. Find the median:
Age | Number of workers |
25 - 30 | 4 |
30 - 35 | 7 |
35 - 40 | 8 |
40 - 45 | 10 |
45 - 50 | 9 |
50 -55 | 8 |
Total | 46 |