Given a set {-2, x, -3, -4, 1,

Nathen Peterson 2022-03-25 Answered
Given a set {-2, x, -3, -4, 1, 15, 22, 2}, for what x would the mean of the set be -12?
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Answers (1)

Raiden Griffin
Answered 2022-03-26 Author has 13 answers
x=1ni=1nai (the mean of a set of n data points)
12=18i=18ai
x432+1+2+15+228=12
Multiply both sides by 8
8×x432+1+2+15+228=8×12
x+31=96
Add -31 to both sides
x+31-31=-96-31
x=127
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