1. Plot the points (7, 83), (8, 76), (9, 74), (10, 88), (11, 92), (6, 60), (7, 85), (8, 78), (9, 85), (10, 90), (11, 89) on the scatter plot.
2. The correlation is positive; as hours of sleep increase, test scores tend to increase.
3. Draw a line of best fit that roughly follows the trend of the points, passing through the middle of the data cluster.
4. For 8.5 hours of sleep, the predicted test score is approximately 82. This is found by locating 8.5 on the x-axis, moving up to the line of best fit, and then reading the corresponding y-value.
Parent Tip: Review the logic above to help your child master the concept of practice with scatter plots worksheet answers.