Autarchy of the Private Cave

Tiny bits of bioinformatics, [web-]programming etc

    • Archives

    • Recent comments

    Archive for January 24th, 2010

    Standard deviation and variance in pictures

    24th January 2010

    MathIsFun offers nicely illustrated pages on math, algebra, geometry and maybe more.

    For example, there is a step-by-step instruction on calculating variance and standard deviation for a set of measured dog heights, with a final picture (below) illustrating one-sigma distance from the mean. Unfortunately, concepts of normal distribution and %% of data points within each sigma range are not discussed, but that might as well be too much for a nice explanation. There are also animations, like this mean machine. Overall, MathIsFun is a nice resource for younglings.

    Share

    Posted in Links | No Comments »