Which of the following is the minimum value of standard deviation
A1
B0
C-∞
DNone of these
A1
B0
C-∞
DNone of these
Related Questions:
The table classifies 40 persons who took a test according to the marks they scored: Calculate the mean marks scored.
Marks | Persons |
0 - 10 | 4 |
10 - 20 | 6 |
20 - 30 | 16 |
30 - 40 | 8 |
40 - 50 | 6 |