georges asked five of his friends how long they studied for the last math test and what grade they received…

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? a his friends on average studied 9.6 hours. b if they studied 9.6 hours they would get a 0 on the test. c they should study 9.6 hours in order to get an a on the test. d for every hour they studied their grade would go up 9.6 points.

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? a his friends on average studied 9.6 hours. b if they studied 9.6 hours they would get a 0 on the test. c they should study 9.6 hours in order to get an a on the test. d for every hour they studied their grade would go up 9.6 points.

Answer

Brief Explanations:

In a linear regression equation $y = mx + b$, $m$ is the slope. Here, $x$ represents study - hours and $y$ represents test grades. The slope indicates the change in $y$ for a unit change in $x$. So, for every 1 - unit increase in study - hours ($x$), the grade ($y$) increases by 9.6 points.

Answer:

D. For every hour they studied their grade would go up 9.6 points.