Question

29. The mean of 20, 8, 12, 13, 15 & P is 30. Find the value of P​

Answer 1

Mean = (20+8+12+13+15+P)/6

30 = (68+P)/6

180 = 68+P

P = 112

Answer 2

Answer:

mean = sum of observation /n.o of observation

30 =68+p/6

180=68+p

p=112

or

68+p/5=30

68+p= 150

p=32.

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