You are here:
- Home »
- Using evidence for learning »
- Reading and analysing data »
- Box and whisker graph »
- Box and whisker - interactive
Box and whisker graph - interactive illustration
The following interactive example shows how assessment data will appear as box and whisker graphs. Click on the buttons to see how the different data sets for Class A and Class B change the graph. You can also put in your own data to see how this affects the graph.
Box and Whisker Plots - Min, Max, Median, Interquartile Ranges
- Data:
- Minimum:
- First Quartile (Q1):
- Median (Q2):
- Third Quartile (Q3):
- Interquartile Range (IQR):
- Maximum:
- Note:
- Outliers are included in this example.
In Class A, the scores have a large spread and the middle half of the students are spread widely from the median.
In Class B, the scores of the middle half of the students are clustered around the median. The top quarter of students scores are spread widely whereas the lower quarter of the scores are close together.
Input your own Data
Please enter a list of comma separated values from 0-100 (e.g. 44, 25, 87):
Comparing Classes
Example 1 : Maths
Class A's lower quartile is at the same mark as Class B's upper quartile (45%), therefore 75% of Class A's students are above 75% of students in Class B.
Example 2 : English
Class A's median is at the same mark as Class B's upper quartile (56%), therefore 50% of Class A's students are above 75% of students in Class B.