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Mathematics 13 Online
OpenStudy (anonymous):

what is the standard deviation of the data set 11,20,31,48

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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