# Question #1b522

##### 1 Answer

Median=

#### Explanation:

This is simply a method which needs to be followed.

Make sure you have a frequency table drawn up from the values given.

There are 180 students. (the sum of the frequencies)

The Median is the value in the middle of a set of data arranged in order.

There are 2 groups of students: 90 lie below the median, 90 lie above the median.

The median is the value between the 90th and the 91st student.

**In which interval does the median lie?**

Count down the frequency column until you get to 90.

There are

The median lies between the 20th and 21st students in the 30 to 40 interval. (

We assume that the marks are evenly distributed throughout the interval, so we now know how far along the interval the median will lie.

The median= 30 + 4.1 = 34.1