Question

The table below gives the number of hours ten randomly selected students spent studying and their corresponding test grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the test grade that a student will earn based on the number of hours spent studying. 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. Hours Studying 0 1 1.5 2 2.5 3 4 4.5 5 5.5 Grades 64 68 69 70 72 79 80 81 91 96 Table Step 1 of 6: Find the estimated slope. Round your answer to three decimal places.

Answer 1

Regression equation calculation:

The estimated slope is 5.452.