Section 6.6 worksheet

Section 6.6 worksheet - 58.4 42.4 30.0 12.7 1.0 Car...

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Section 6.6 – Line of best fit The Line of Best Fit is the trend line that shows the relationship between two sets of data most accurately. Some graphing calculators give us a correlation coefficient , r , that tells us how closely the equation models the data. Average Temperatures in Northern Latitudes 1) Plot the data. 2) Use a graphing calculator to find the line of best fit a. Press STAT b. Select edit and enter data (L1 is x and L2 is y ) c. Press STAT again and arrow over to CALC d. Select LinReg a x + b 3) Write the equation for the line of best fit and graph it. Latitude(ºN) 0 10 20 30 40 50 60 70 80 Temp (F) 79.2 80.1 77.5 68.7
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Unformatted text preview: 58.4 42.4 30.0 12.7 1.0 Car Stopping Distances Speed (mi/hr) 10 15 20 25 30 35 40 45 Stopping distance (ft) 27 44 63 85 109 136 164 196 1) Plot the data. 2) Use a graphing calculator to find the line of best fit 3) Write the equation for the line of best fit and graph it. Equation: _________________________________ 4) Use the equation to estimate the stopping distance for a car going 60 mi/hr. 5) Do you think this equation will work for very high speeds? (Dont just answer yes or no. You must explain. Hint : the actual stopping distance for a car going 90 mi/hr is 584 ft)...
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Section 6.6 worksheet - 58.4 42.4 30.0 12.7 1.0 Car...

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