Question

4. Following is the frequency distribution of marks obtained by 50
students in a test of Statistics. Calculate arithmetic mean.
Marks Number of Students
0-10
4
10 - 20
6
20-30
20
30 - 40
10
40 - 50
7
50 - 60
3​

Answer 1

Answer:

Arithmetic mean

= 4+6+20+10+7+3 = 50

50/6 = 8.333