Answer:
We have, \[11=\frac{x+(x+2)+(x+4)+(x+6)+(x+8)}{5}\] \[11=\frac{5x+20}{5}\] 55 = 5x + 20 5x = 35 x - 7 \[\therefore \]Mean of first three observations \[=\frac{x+(x+2)+(x+4)}{3}=\frac{3x+6}{3}\] \[=x+2=7+2=9\] \[1{}^{1}/{}_{2}\] [\[\because \]x=7]
You need to login to perform this action.
You will be redirected in
3 sec