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