Median Vs Average. Since age presumably can never be negative a lognormal distribution is probably a better description of it than normal so median E to the mean of the underlying normal is more useful. Although average is a commonly-used and well understood statistic median is also a common descriptor used to express a middle value in a set of data.
The mean is the average where the sum of all the numbers is divided by the total number of numbers whereas the median is the middle value in the list of given numbers numerically ordered from smallest to biggest and mode is the value of the number which occurs most often in the list. To calculate the median here add the two middle numbers 30 47 and divide by 2. Informal Not outstanding not good banal.
Median is the middle value in a group of observations.
If we are going to categorize people according to their income levels like say upper medium lower we should use the median or the quartiles. For our example we need to add the nine quiz scores together and then divide the sum by nine. Again it depends on the question you are asking of the data however if you question is what is the average salary in terms of what is the typical salary of an employee then median would be a much better measure than the mean. In fact the median is where the underlying normal has its mean so it is a much more attractive measure.
