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Statistics

Averages, spread and probability.

2 articles

• 1 min read

  Averages and spread: mean, median, mode, range and standard deviation

  Three ways to describe a typical value, two ways to describe how spread out data is, and when to use each.

• 2 min read

  Statistics basics: z-scores, percentiles, quartiles and combinations

  Three statistics skills that come up again and again: turning a z-score into a percentile, finding quartiles in a data set, and counting with the combination formula.