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The mean of 10 observations is 21 If each score is divided by 3 find the new mean?
Wiki User
∙ 14y ago
The new mean would be 7. The mean is the average of the data.
(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10=21
[(x1/3)+(x2/3)+(x3/3)+(x4/3)+(x5/3)+(x6/3)+(x7/3)+(x8/3)+(x9/3)+(x10/3)]/10=?
[(1/3)(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)]/10=?
[(x1+x2+x3+x4+x5+x6+x7+x8+x9+x10)/10]/3=
21/3=7
Wiki User
∙ 14y ago
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