Question

If the mean of $10,12,18,13,P$ and $17$ is $15$, find the value of P

Answer 1

Given the mean of $10$ ,$12$ , $18$ , $13$ , $P$ and $17$ is $15$

$Mean$ =$\frac{\Sigma x}{n}$

$15=\frac{10+12+18+13+P+17}{6}$

$90=70+P$

$P=90-70=20cm$