Making Predictions from a Scatter Plot

Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week, if that person spends an average of 10 hours on recreational activities every week?

• 33 hours

• 85 hours

• 50 hours

• 65 hours

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters. 

• 150 pages

• 170 pages

• 190 pages

• 210 pages

The graph shows how the number of inches of rain impacts the growth of a plant in inches. Based on the scatterplot, what is the best prediction of the number of inches a plant will grow after 4 inches of rain?

• A plant is expected to grow 0.8 inches after 4 inches of rain.

• A plant is expected to grow 0.2 inches after 4 inches of rain.

• A plant is expected to grow 1.5 inches after 4 inches of rain.

• A plant is expected to grow 1 inch after 4 inches of rain.

Tags

8.5.D

Based on this scatterplot, approximately what score would a student with 6 absences expect to receive on the final exam?

• 65

• 92

• 67

• 76

• $13,500.00

• $11,454.55

• $13,454.55

• $636.36

Based on the scatterplot, the best prediction of the total number of pages in a book with 6 chapters is ​ ​ (a)  

• 120 pages

• 140 pages

• 170 pages

• 220 pages

The graph shows how the number of inches of rain impacts the growth of a plant in inches. Based on the scatterplot, what is the best prediction of the number of inches a plant will grow after 4 inches of rain?

• A plant is expected to grow 0.8 inches after 4 inches of rain.

• A plant is expected to grow 0.2 inches after 4 inches of rain.

• A plant is expected to grow 1.5 inches after 4 inches of rain.

• A plant is expected to grow 1 inch after 4 inches of rain.

Tags

8.5.D

How can you use a scatter plot to make predictions about future data points?

• By drawing a line of best fit and extending it

• By counting the number of points

• By identifying the outliers

• By changing the scale of the axes