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Determining Se and r2

Using the slope (b), which is 0.766 and intercept (a), which is 6.276, calculated on the previous page, we can calculate the Standard Error of Estimate:

    Se = 3.66

The correlation coefficient can also be calculated, using the totals of the columns:

r2 = 0.615 shows that the data have some linear relationship. However, there is also some scatter.