stats psch 810 test 1
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SS /n
variance
SD
^{2}
(SumX)/n
Mean
Sum(x-m)=
0
when all numbers fall on the mean
perfect mean
(mean-median)/ some denominator ... a measure of
skewness
(Sum(x-m)
^{2}
)/n
variance
SD equation
Squareroot(
(sum(x-m)
^{2}
)
^{ }
^{ }
)
( n )
mean will always give you the lowest SD
Card Set Information
Author:
ASHLEYmcintyre
ID:
40180
Filename:
stats psch 810 test 1
Updated:
2010-10-06 19:54:09
Tags:
first test
Folders:
Description:
test one of intro to stats
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