Question

the mean of 12+x,14+2x,16,18+x,20,22-x and 24-3x is​

Answer 1

Answer:

Answer:

18

Step-by-step-explanation:

Mean = sum/no. *of observations

Here,

number = 7

sum is:

(12+x)+(14+2x)+16+(18+x)+20+(22-x+(24-3x)

= 12+14+16+18+20+22+24+x+2x+x-x-3x

= 126

Therefore,

Mean = 126/7

= 18

Step-by-step explanation:

Answer 2

Given : 12+x,14+2x,16,18+x, 20,22-x and 24-3x

To Find : Mean

Solution:

Mean = Sum of all observations / number of observation

12  + x

14 + 2x

16

18 + x

20

22 - x

24 - 3x

______

126 + 4x - 4x  =  126

Sum of all observations = 126

Number of observation  = 7

Mean = 126/7  = 18

The mean of 12+x,14+2x,16,18+x, 20,22-x and 24-3x is : ​ 18

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