Find the equation of the least squares regression line. Interpret the gradient of this function. Plot the least squares regression line on the scattergram. Make a prediction of the stride rate if the speed is 19 feet per second. Interpret your result.
Extension Do a residual plot of the data.
Enter the following data into a Statistics Lists, say L1 and L2. 22.11 Stride Rate 3.05 3.12 3.17 3.25 3.36 3.46 3.55 2. Construct a scatterplot from this data. The data appears to follow a linear relation quite nicely. This gives the gradient and y-intercept of the regression equation.