Final answer:
Andrea's assumption is not correct; the length of the box plot sides represents the spread of data within the quartiles, not the quantity of data points.
Step-by-step explanation:
Andrea is not necessarily correct. In interpreting a box plot, or whisker plot, the length of the sides does not correspond to the number of data points but to the spread of data within that quartile. The left side of the median represents the lower 50% of the data, and the right side represents the upper 50%. If one side of the box plot is shorter, it means that 25% of the data within that quartile is more closely packed together compared to the other side. It does not indicate that there are fewer numbers. Therefore, there could be the same amount of data on both sides of 7, just more spread out on one side and more concentrated on the other.