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الإحصاء

المتوسطات والتشتت والاحتمالات.

2 مقالات

• قراءة 1 دقائق

  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.

• قراءة 2 دقائق

  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.