What does it mean when a question asks to calculate the deviations from the mean?
the set of numbers are 116.4, 115.9, 114.6, 115.2, 115.8
and the answer is .82, .32, -.98, -.38, .22
help?
the set of numbers are 116.4, 115.9, 114.6, 115.2, 115.8
and the answer is .82, .32, -.98, -.38, .22
help?
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Let X be a random variable
Mean = (116.4 + 115.9 + 114.6 + 115.2 + 115.8)*(1/5) = 115.58
di = xi - Mean
d1 = 116.4 - 115.58 = 0.82
d2 = 115.9 - 115.58 = 0.32
d3 = 114.6 - 115.58 = - 0.98
d4 = 115.2 - 115.58 = - 0.38
d5 = 115.8 - 115.58 = 0.22
An interesting property of the mean, is that ∑di = 0. Verify it!
Mean = (116.4 + 115.9 + 114.6 + 115.2 + 115.8)*(1/5) = 115.58
di = xi - Mean
d1 = 116.4 - 115.58 = 0.82
d2 = 115.9 - 115.58 = 0.32
d3 = 114.6 - 115.58 = - 0.98
d4 = 115.2 - 115.58 = - 0.38
d5 = 115.8 - 115.58 = 0.22
An interesting property of the mean, is that ∑di = 0. Verify it!