The Effects of Outliers on Spread and Centre

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      Lesson summary:

      In this video, the effects of outliers on spread and center of a dataset are discussed. An outlier is a data point that falls outside the main pattern of data points and is either the largest or smallest value in a given data set. Outliers can affect measures of center and spread, such as mean, median, mode and range. The mean is affected by outliers as they skew the results, while the median and mode are resistant to outliers as they don’t change their values as much as the mean does. The median only cares about the middle of the data set and the mode only cares about the frequency of a data value.

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