Question

Part III: Assume Kyle and Caitlyn were extremely accurate and the correlation coefficient is r = 0.99. Find the line of best fit to model the data.
Step 1: Use the formula to find the slope of the line of best fit. Caitlyn already calculated the standard deviation of the y-values as sy = 7.32. (4 points)












Step 2: Find the y-intercept using the formula a = y − bx. (2 points)

Answer 1

Part III: Assume Kyle and Caitlyn were extremely accurate and the correlation coefficient is r = 0.99. Find the line of best fit to model the data.
Step 1: Use the formula to find the slope of the line of best fit. Caitlyn already calculated the standard deviation of the y-values as sy = 7.32. (4 points)












Step 2: Find the y-intercept using the formula a = y − bx. (2 points)






Step 3: Write the line of best fit, , to model the data. Replace y and x with the variables used in the experiment and on the graph. (2 points)






Part IV: What do the slope and the y-intercept tell you about the variables in the experiment? (2 points)






Part V: Use the line of best fit from Part III, Step 3 to predict how far the spring will stretch with a mass of 67 grams. (1 point)







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Answer 2

will medal