Median

\text{middle value of the ordered data set}

Result unit: — (jednostki danych)

What it describes

The value that divides an ordered data set into two equal halves.

The "middle" value after the data have been ordered — half are smaller, half are larger. It is resistant to extreme values (unlike the mean).

When the data have outliers (e.g. median income); ordinal data.

Data: 1, 3, 5, 7, 9. Give the median.

Substitution5 ordered values.

Resultmedian

=5

(the middle value).

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