Calculating the square root of a number

Apr 11, 2014

 My "Exploring Descriptive Statistics" learning engagement requires that my learners are able to compute standard deviation.

S = sqrt(((sigma(x - average x)^2)/(n-1)) - which looks much better in picture below. 

For a long time I have been struggling just to do the square root part of this equation inside STORYLINE. 

The amazing thing is that it can be done. The sad thing is the way in which I had to do it.

So this is the part I am sharing in the hope that someone out there can come up with a more elegant equation programming solution.

S= (x- x)2n-1

S= (x- x)2n-1

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