Some students were surveyed about how much time they spent playing video games last week and their overal test average. Find the equation of the least-squares line, line of best fit. Explain the method you used to find the line of best fit. Interpret the meaning of the slope. Be specific and include numbers. Interpret the meaning of the y-intercept mathematically. Be specific and include numbers. State the correlation coefficient. Describe any possible correlation for the data set. Use the correlation coefficient to support your answer. Use the equation of the least-squares line from part a to predict the test average for someone who plays 5 hours of video games a week.