Question

The mean of 7, 5, 8, 2p and 11 is 8+P then value of P is ______________.

Answer 1

Answer:

-3

Step-by-step explanation:

(7+5+8+2p+11)/5 = 8+p

Answer 2

Mean = sum of all obs./ no. of obs.

8+p = 7+5+8+11+2p/5

8+p = 31+2p/5

5(8+p) = 31+2p

40 + 5p = 31 + 2p

40 - 31 = 2p - 5p

9 = -3p

p = 9/-3

p = -3

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