Question

if the mean of 12 14 8 2p and 20 is 16 find value of p

Answer 1

as according to the formula
£fixi\£fi=mean
12+14+8+2p+20/5=16
54+2p=80
2p=26
p=13
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Answer 2

mean=sum of the observations/total no. of observations
16 = 12+14+8+2p+20/5
80 = 54+2p
26=2p
p=26/2
p=13