A sample of 55 streams in severe distress was obtained during 2007. The following bar graph illustrates the number of streams that are from the Northeast, Northwest, Southeast, or Southwest. In the bar graph, the bar for the Northeast has been omitted.
How many streams are from the Northeast?

Question

Quizplus · Accepted Answer

The total number of streams is 55, and the bars for the Northwest, Southeast, and Southwest add up to 40. Therefore, the remaining 15 streams must be from the Northeast.

A Sample of 55 Streams in Severe Distress Was Obtained