The marks obtained by 8 students in a mathematics test are: 15, 20, 25, 25, 30, 35, 40, 50. Find median
A27.5
B27
C28
D29
A27.5
B27
C28
D29
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An experiment is called random experiment if it satisfies
The frequency distribution of diameter (D) of 101 steel balls is given in the following list-
D(mm) | 43 | 44 | 45 | 46 | 47 | 48 |
No. | 13 | 15 | 22 | 21 | 16 | 14 |
find the mean of the diameter in mm