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OpenStudy (anonymous):
what is the standard deviation of the data set 11,20,31,48
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OpenStudy (anonymous):
hello?
OpenStudy (welshfella):
Find the mean mu then work out the differences between the 4 numbers and the mean. SQuare these values then find their sum and divide by the number of values which is 4 in this case. Finally take the square root of the last result
OpenStudy (anonymous):
thx
OpenStudy (welshfella):
|dw:1440612951005:dw|
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