Question

(12) If the mean of the following data is 20.2, find the value of P.

x 10 15 20 25 30
f 6 8 P 10 6

Answer 1

Answer:

Mean

∑

1

5

y

∑

1

5

(x×y)

⇒20.2=

6+8+p+10+6

60+120+20p+250+180

⇒(30+p)×20.2=20p+610

⇒0.2p=4

⇒p=20

Step-by-step explanation:

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