<P> The median is one of a number of ways of summarising the typical values associated with members of a statistical population ; thus , it is a possible location parameter . The median is the 2nd quartile , 5th decile , and 50th percentile . Since the median is the same as the second quartile , its calculation is illustrated in the article on quartiles . A median can be worked out for ranked but not numerical classes ( e.g. working out a median grade when students are graded from A to F ) , although the result might be halfway between grades if there is an even number of cases . </P>
<P> The median is one of a number of ways of summarising the typical values associated with members of a statistical population ; thus , it is a possible location parameter . The median is the 2nd quartile , 5th decile , and 50th percentile . Since the median is the same as the second quartile , its calculation is illustrated in the article on quartiles . A median can be worked out for ranked but not numerical classes ( e.g. working out a median grade when students are graded from A to F ) , although the result might be halfway between grades if there is an even number of cases . </P>
is the 50th percentile the mean or median
is the 50th percentile the mean or median
median
median