Predictions from Scatterplots

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

Based on the trend in the data, approximately how many free throws would a player be expected to make if he attempted 60 free throws?

• 50

• 35

• 25

• 60

Based on the scatterplot, what is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 40 beats per minute

• 60 beats per minute

Based on the scatterplot, what is the best prediction of a person's average typing speed if the person has spent 70 hours learning to type?

• 100 words per minute

• 55 words per minute

• 75 words per minute

• 60 words per minute

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

• 65

• 92

• 67

• 76

Which of the following scenarios is an example of using a scatter plot for making predictions?

• Calculating the exact value of a data point

• Estimating the sales based on advertising spend

• Counting the number of data points above the line of best fit

• Identifying the color of data points

What is the line of best fit in a scatter plot primarily used for?

• To separate different groups of data

• To predict the value of one variable based on the value of another

• To calculate the exact values of all data points

• To create a boundary around all data points

Based on the scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $135

• $115

• $105

• $150

Based on the scatterplot, what is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

How can you use a line of best fit to make predictions about data?

• By finding the average of all data points

• By drawing it through the highest and lowest points

• By using it to estimate values for one variable given values of the other

• By counting the number of points that touch the line