Find the median for the following frequency table.

Since, we have ungrouped data, we need to sort the data in ascending order to find median of the data.

Let us formulate a table for easy and simple calculations.

Total number of items, n = 20 (even)

When n = even, position of median is given by

⇒

⇒

Note that, from the cumulative frequency column: 10^th value = 15 & 11^th value = 19

Then,

⇒

⇒ Median = 17

Thus, median is 17.