Answer
The scatter diagram suggests that the poorer a school district is, the shorter the school days are.
Work Step by Step
In fact, when the percent of the population that is low income is greater than 50%, the length of the school day is shorter. The problem is that there are only three observations for low income districts greater than 50% and $r=-0.461$ indicates a moderate negative correlation between the percent of the population that is low income and the length of the school day.
