The table below gives the number of hours spent unsupervised

The table below gives the number of hours spent unsupervised each day as well as the overall grade averages for seven randomly selected middle school students. Using this data, consider the equation of the regression line for predicting the overall grade average for a middle school student based on the number of hours spent unsupervised each day. (Note: The correlation coefficient may or may not be statistically significant for the data given. In practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant.) Enter the estimated slope. Round your answer to three decimal places. Answer: Enter the estimated y-intercept. Round your answer to three decimal places. Answer: Enter the estimated value of y when x = 0.5. Round your answer to three decimal places. Answer: Enter the error prediction when r = 0.5. Round your answer to three decimal places. Answer: Determine the value of the dependent variable hat y at x = 0. Answer: Enter the value of the coefficient of determination. Round your answer to three decimal places. Answer:

Solution

Following is the calculation for regression line:

X

Y

X