The marks of 50 students (out of 60) in a certain examination are given below Marks
20-25
26-31
32-38
38-44
44-50
50-56 No. of students
7
13
12
6
8
4
Compute the following measures of central tendencies and variations
a) Mean
b) Median
c) Mode
d) Mean deviation about the median
e) First quartile (Q1)
f) 3rd decile (D3)
g) 50th percentile (P50)
h) Coefficient of variation
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