Question

a study showed that the more exercise that people had in a day, the more they slept at night. which scatter plot represents the relationship? a. hours slept 9 8 7 6 0 10 20 30 40 50 60 minutes spent exercising b. hours slept 9 8 7 6 0 10 20 30 40 50 60 minutes spent exercising c. hours slept 9 8 7 6 0 10 20 30 40 50 60 minutes spent exercising d. hours slept 9 8 7 6 0 10 20 30 40 50 60 minutes spent exercising

Explanation:

Step1: Understand positive - correlation

A positive correlation means as one variable increases, the other variable also increases. Here, as the minutes spent exercising (x - axis) increase, the hours slept (y - axis) should increase.

Step2: Analyze each scatter - plot

In scatter - plot B, as the value on the x - axis (minutes spent exercising) increases, the value on the y - axis (hours slept) generally increases. In scatter - plot A, there is no clear upward trend. In scatter - plot C, there is no clear relationship. In scatter - plot D, as the x - value increases, the y - value seems to decrease.

Answer:

B.