Algebra 2 Name___________________Block:_____
2.4: Line of Best Fit Worksheet
1. The table below gives the number of hours spent studying for a science exam and the final exam
grade.
a) Using graph paper, draw a scatterplot of the data.
b) What is the equation for the line of best fit? Sketch this on your graph.
Equation
c) Predict the exam grade of a student who studied for 6 hours.
Grade expected
d) Could this line go on forever? Why or why not?
2. The table below gives the height and shoe sizes of six randomly selected men.
a) Using graph paper, draw a scatterplot of the data.
b) What is the equation for the line of best fit? Sketch this on your graph.
Equation
c) If a man has a shoe size of 10.5, what would be his predicted height?
Height expected
d) Describe what the slope of the line represents.
3. A student who waits on tables at a restaurant recorded the cost of meals and the tip left by single
diners. Use your calculator to determine the line of best fit.
If the next diner orders a meal costing $10.50, how much tip should the waiter expect to receive?
Equation Tip expected