Question

The table below gives the completion percentage and interception percentage for five randomly selected NFL quarterbacks. Based on this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for using the completion percentage to predict the interception percentage for an NFL quarterback. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant.

Completion Percentage	55	56	60	63	64
Interception Percentage	5	4.5	3	2	1.5

Table

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Find the estimated slope. Round your answer to three decimal places.

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Answer 1

The statistical software output for this problem is:

From above output:

Estimated slope = -0.377