If the mean of observations x- x - 2- x - 4- x - 6 and x - 8 is 11- the value of x-8576

Question

Toppr Admin · Accepted Answer

Mean of observations x-x-2-x-4-x-6-x-8 is 11Mean -SumNumber of observationMean -x-x-2-x-4-x-6-x-85-115x-205-115x-20-555x-55-x2212-205x-35x-7Hence the answer is option D

If the mean of observations $x, x + 2, x + 4, x + 6$ and $x + 8$ is $11$ , find the value of $x$ :

$8$
$5$
$7$
$6$

Mean of observations $x, x + 2, x + 4, x + 6, x + 8$ is $11$
Mean $= \frac{Sum}{Number of observation}$
Mean $= \frac{x + x + 2 + x + 4 + x + 6 + x + 8}{5} = 11$
$\frac{5 x + 20}{5} = 11$
$5 x + 20 = 55$
$5 x = 55 - 20$
$5 x = 35$
$x = 7$
Hence the answer is option $D$

If the mean of observations x,x+2,x+4,x+6 and x+8 is 11, find the value of x:8576

Mean of observations x,x+2,x+4,x+6,x+8 is 11Mean =SumNumber of observationMean =x+x+2+x+4+x+6+x+85=115x+205=115x+20=555x=55−205x=35x=7Hence the answer is option D

If the mean of observations $x, x + 2, x + 4, x + 6$ and $x + 8$ is $11$ , find the value of $x$ :

$8$
$5$
$7$
$6$

Mean of observations $x, x + 2, x + 4, x + 6, x + 8$ is $11$
Mean $= \frac{Sum}{Number of observation}$
Mean $= \frac{x + x + 2 + x + 4 + x + 6 + x + 8}{5} = 11$
$\frac{5 x + 20}{5} = 11$
$5 x + 20 = 55$
$5 x = 55 - 20$
$5 x = 35$
$x = 7$
Hence the answer is option $D$