Question

(iii) On how many days was
14. Find the mean of the marks from the following table :
10
12
20
Marks
15
18
3
8
7
5
2
No. of students
dodas follows​

Answer 1

Answer:

total no.of observation

no. of observation = 10+12+20+15+18+3+8+7+5+2 divide by 10= 100/10=10 answer