The problem describes a box plot showing the distribution of class sizes at Oceanside Middle School. We are asked to determine the upper quartile of the class sizes.

1. Problem Description

The problem describes a box plot showing the distribution of class sizes at Oceanside Middle School. We are asked to determine the upper quartile of the class sizes.

2. Solution Steps

The upper quartile of a box plot is represented by the right edge of the box. The box stretches from the first quartile (lower quartile) to the third quartile (upper quartile). The whiskers extend to the minimum and maximum values (excluding outliers). In the given box plot, the right edge of the box appears to be at the 26 mark on the number line. Thus, the upper quartile is

2

6.

3. Final Answer

26