'There's a huge misconception that if someone sneezes a lot then they must have hay fever,' says Dr Adrian Morris of the Surrey Allergy Clinic. From dogs to dust mites and pollen to latex, it's thought that 40 per cent of us suffer from an allergy.
The mean absolute deviation is the average of the positive distances of each point from the mean. The larger the MAD, the greater variability there is in the data (the data is more spread out). The MAD helps determine whether the set's mean is a useful indicator of the values within the set.
So the mean absolute deviation (from the mean) is 3.6. In other words, the sample points are, on average 3.6 units from the mean. For more information visit the Related Links. The Mean Absolute Deviation is calculated in three simple steps. Alternatively , you can use the excel formula =AVEDEV(56,78,90) to obtain the result. There are different formulas for the calculation of mean absolute deviation. For example mean absolute deviation from mean and mean absolute deviation from median.