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Module: Data Analysis Lesson: Line of Best Fit Name Date Pd. For each of the following, use the calculator to find the equation of the line of best fit and then solve the problem. 1. A student who waits on tables at a restaurant recorded the cost of meals and the tip left by single diners. Meal Cost Tip $4.75 $0.50 $6.84 $0.90 $12.52 $1.50 $20.42 $3.00 $8.97 $1.00 If the next diner orders a meal costing $10.50, how much tip should the waiter expect to receive? Line of Best Fit Tip expected 2. The table below gives the number of hours spent studying for a science exam (x) and the final exam grade (y). X Y 2 77 5 92 1 70 0 63 4 90 2 75 3 84 Predict the exam grade of a student who studied for 6 hours. Line of Best Fit Grade expected 3. The table below shows the lengths and corresponding ideal weights of sand sharks. Length Weight 60 105 62 114 64 124 66 131 68 139 70 149 72 158 Predict the weight of a sand shark whose length is 75 inches. Line of Best Fit Weight expected 4. The table below gives the height and shoe sizes of six randomly selected men. Height Shoe size 67 8.5 70 9.5 73.5 11 75 12 78 13 If a man has a shoe size of 10.5, what would be his predicted height? Line of Best Fit Height expected 66 8