If the mean of 7 observations are 42,48,x+15,x+17,x+20,58,60 is 53.find x
Answers
Answered by
3
to find x
firstly you have to apply formula of odd terms is x+1/2
then choose 3 and 4 term
53=x+15+x+17/2
53=2x+32/2
53*2=2x+32
106=2x+32
106-32=2x
74=2x
x=74/2
x=37
i hope my answer will helped u
firstly you have to apply formula of odd terms is x+1/2
then choose 3 and 4 term
53=x+15+x+17/2
53=2x+32/2
53*2=2x+32
106=2x+32
106-32=2x
74=2x
x=74/2
x=37
i hope my answer will helped u
Similar questions