Question

1. luke collected data while his friends were playing video games saturday night. based on the scatter - plot, what is the best prediction for the number of hours one of phils friends will spend sleeping when the friend spends 1 hour playing video games?

a. 9 hours
b. 21 hours
c. 13 hours
d. 7 hours

Explanation:

Step1: Analyze scatter - plot trend

As the number of hours of video games increases, the number of hours of sleep decreases. We can estimate the relationship visually.

Step2: Locate 1 hour on x - axis

Locate the point on the x - axis (hours of video games) corresponding to 1 hour.

Step3: Estimate y - value

Based on the general downward - sloping trend of the points in the scatter - plot, when x = 1 (1 hour of video games), we estimate the value on the y - axis (hours of sleep). Looking at the scatter - plot, it seems reasonable to estimate around 9 hours of sleep.

Answer:

a. 9 hours