Georges asked five of his friends how long they studied for the last math test and what grade they received. He found a linear regression equation for the data to be y = 9.6x + 65.8. What does the 9.6 mean in the context of this equation?
The 9.6 in this equation represents the slope of the line, which indicates the average increase in the grade received for every additional unit of study time. In other words, for every additional hour of studying, the grade is expected to increase by 9.6 points.
