For instance, one pint of ordinary lager, bitter or cider, or a 175 ml glass of wine equal two units, but the UK legal limit is 80 milligrammes of alcohol in 100 millilitres of blood.
The Mean Absolute Deviation (MAD) of a set of data is the average distance between each data value and the mean. 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. The larger the MAD, the less relevant is the mean as an indicator of the values within the set. Let's compare Sherlock's data set with that belonging to Watson. to see what the Mean Absolute Deviation (MAD) tells us.
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.