(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
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(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
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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