Math, asked by 9989thousif, 5 months ago

If the sum of observations is 630 and their mean is 42, then the

value of is?.

(a) 21 (b) 30 (c) 15 (d) 20

Answers

Answered by Bhawana861

0

Answer:

c. 15

Step-by-step explanation:

Mean = Sum(s) /Number(n)

42n=630

n=630/42

n=15

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