the means of 12+x,14+2x,16,18+x,20,22-x and 24-3x is
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Answer:
18
Step-by-step explanation:
mean = sum of all observations / no of observations
sum of all observations= 12+x + 14+2x + 16 + 18+x + 20 + 22-x + 24-3x = 126
number of observations= 7
mean = 126/7
= 18
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