Given a set {-15, 1, 200, x, 1},

aidinacol7

aidinacol7

Answered question

2022-03-23

Given a set {-15, 1, 200, x, 1}, for what x would the mean of the set be -15?

Answer & Explanation

Jesse Gates

Jesse Gates

Beginner2022-03-24Added 19 answers

a=1ni=1nai (the mean of a set of n data points)
15=15i=15ai
15+1+200+x+15=15
Multiply both sides by 5
515+1+200+x+15=5(15)
x+187=75
Add -187 to both sides
x+187-187=-75-187
x=262

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