Question

if the mean of 6,7,10,x,9,12,11, is 8,then find x​

Answer 1

Answer:

4

Step-by-step explanation:

1    2    3     4     5      6     7

6 + 7 + 9 + 10 + 11 + 12 = 52

52 + 4 = 56

56 divided by 7 = 8

Answer 2

Step-by-step explanation:

given that,

The mean of 6,7,10,x,9,12,11 is 8

Then, x=?

we know that,

mean= sum of observation/no. of observations

6+7+10+x+9+12+11 / 7 = 8

= 55+x/7=8

= 55+x = 8*7

= 55+x = 56

= x=56-55

= x=1

Therefore, x=1