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An online mean absolute deviation calculator helps you to find the absolute deviation of the given number around the mean, median or any other number. The mad calculator tells you the measure of dispersion, how much the values in the data set are different from their mean. Keep reading to know about its formula, how to calculate it manual and much more!
The mean deviation or absolute deviation is calculated by the summation of the difference of each value from mean. The formula used by the calculations of MAD is as follows:
$$ MAD = Σ|xi – m| / n $$
xi are the individual values
m is the mean of numbers
n is the total number
The formula for the calculation is discussed earlier, here we have an example:
Calculate the mean absolute deviation for the data set: 4, 16, 8, 9, 14, 5?
The formula is:
$$ MAD = Σ|xi – m| / n $$
Find the mean:
\(m = 4 + 16 + 8 + 9 + 14 + 5 / 6 \)
\(m = 56 / 6 \)
\(m = 9.33 \)
Find deviation from the mean:
\(4 – 9.33 = -5.33 \)
\(16 – 9.33 = 6.67\)
\(8 – 9.33 = -1.33 \)
\(9 – 9.33 = -0.33 \)
\(14 – 9.33 = 4.67\)
\(5 – 9.33 = -4.33 \)
Determine the mode of each value:
\(|-5.33| = 5.33\)
\( |6.67| = 6.67 \)
\(|-0.33| = 0.33\)
\(|4.67| = 4.67\)
\( |-4.33| = 4.33 \)
Determine the mean of absolute values:
\( m = 5.33 + 6.67 + 1.33 + 0.33 + 4.67 + 4.33 / 6 \)
\( m = 22.66 / 6 \)
\( m = 3.8 \)
Also, our mean deviation calculator uses this formula for the calculation of the MAD. For ease, you can also try our online mean mode median calculator that helps you to calculate the mean, mode & median of your given data set.
The calculation becomes very easy with this online Mean Absolute Deviation Calculator. Just stick to the following points:
If you select the ‘other’ from the dropdown menu, then enter the value around which the data is distributed.
Once you enter in all the fields, the Mad calculator shows:
Remember that, MAD assists to get a sense how the values are spread out in a data set. It is helpful for the data analysis in the Probability & Statistics. Quit worrying about its calculations; simply use an online mean deviation calculator that helps you to do the calculation easy & accurately.
From the authorized source of Wikipedia: Definition & formula of MAD
From the site of Khanacademy : How to do the calculations
From the site of mathbits.notebokk : Interesting facts about MAD