Statistical skills
Comparing data sets using statistics
Data sets can be compared using averages, box plots, the interquartile range and standard deviation.

Forming a linear model from a given set of data
A scatter graph and a line of best fit are used to make predictions of results.

Video playlist
Standard deviation. Video
Standard deviation can give you a clearer picture of a sample than averages alone.

Mean, median and mode. Video
Mean, median and mode are different types of average that can produce very different results.

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