Question

if the mean of 9, 13, 17 ,14,x,16 and 20 is 25 .find the value of x?​

Answer 1

Answer:

166

Step-by-step explanation:

mean=sum of observations /number of observations

25=9+13+17+14+x+16+20

25=89+x/7

25*7=89+x

175=89+x

175-89=x

x=86