Question

The mean of 8,5,12,p,15,18 is 12. Find value of p

Answer 1

p =14

mean = sum of observation/number of observation

so 8+5+12+15+18+p/6=12

58+p/6=12

58+p= 12.6

58+p= 72

p=14

Answer 2

8+5+12+15+18+p/6=12
58+p/6=12
58+p=72
p=72-58
p=14

I hope it may help you