Using the box plot, the median rainfall of the given data is determined as: 6 cm.
How to find the median of a data in a box plot?
In a box plot, the median is represented by the line inside the box. To find the median:
1. Identify the box in the box plot.
2. Locate the line inside the box; this represents the median.
In this case, the box is between 5.5 and 7. The line inside the box is at the data value of 6.
Therefore, we can conclude that the median of the data is: 6 cm.