The mean absolute deviation is the sum of the differences between data values and the mean, divided by the count. In this case it is 15.7143
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The range and mean absolute deviation are: Range = 29 Mean absolute deviation = 8.8
The mean absolute deviation (from the mean) is 4.75
The standard deviation = 23.856
37.5
To find the mean of a set of numbers, you add up all the numbers and then divide the sum by the total count of numbers. Therefore, the mean of 19, 20, 24, 28, and 29 is (19 + 20 + 24 + 28 + 29) / 5 = 24.