The correct option is Class A had the higher median score. Class A scored better on the test.
A box plot is used to study the distribution and level of a set of scores. The box plot consists of two whiskers that represents the maximum and minimum numbers.
On the box, the first line to the left represents the lower quartile. The next line on the box represents the median. The third line on the box represents the upper quartile.
The median of class A = 9
The median of class B = 8.2
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