In making a box plot, we need five (5) data. These are the minimum, quartile 1, median, quartile 3, and maximum data.
In the given Class 2 Data, the details are:
1. Minimum Data - 70
2. Quartile 1 - 84
3. Median - 86
4. Quartile 3 - 88
5. Maximum Data - 90
Let's now draw the box plot.
1. Draw a number line from 70 to 90 or from 60 to 100. The number line depends on you.
2. Plot the 5 data on the number line.
3. After plotting, draw a box from Q1 to Q3.
4. Cut the box created in half by drawing a vertical line through the median.
5. Draw whisker or line from minimum to Q1 and from Q3 to maximum.
See the final box plot below.
