Question

The mean age of a group of 40 student is 17.45 years. Find the missing frequencies

Age:15,16,17,18,19,20
No.of.students:3,p,9,11,q,3

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

p=8

q=6

Step-by-step explanation:

Prapare frequency distribution table,

You will get two equations ...

p+q=14

16p+19q=242

Solve both and get the answer