急!!!數學Measures of Dispersion
2009-06-10 5:29 am
The mean of the five number 6, 9, 2, x, y is 5 and the standard deviation is 6次方 . Find the values of x and y.
回答 (2)
2009-06-10 6:23 am
standard deviation is ???
2009-06-10 6:19 am
the standard deviation is 6次方??姐係咩?
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