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Mean is simply another name for average ➗

  • Calculate mean by adding all of the numbers in a data set and divide by the number of data points in the set
  • Example: to calculate the mean of 45, 72, 23, and 68, one would follow these steps:

            1. Add the numbers: 45+72+23+68=208
           2. Divide 208 by the number of data points (4): 208/4 = 52
           3. Therefore, the mean of this data set is 52.

Mean can be used for a plethora of things, including: 📊

  • Comparing Distributions 
  • Drawing a Standard Curve 
  • Constructing a Box and Whisker Plot
  • Calculating a Percentile

When there is an outlier in a group of data, it WILL AFFECT THE MEAN!
Adding or subtracting an outlier will result in a new mean.

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