Question

The scatter plot below shows data dour collected to compared the amount of television a student watched hours per week and his or her GPA

Answer 1

we have 30 points

so we will have 30 data in x and 30 data in y

First, we need to calculate the mean of x

x mean could be 12.6

then we calculated the mean of y

y means could be 2.01

the standard deviation in x = 6.68

the standard deviation in y =0.144

the answer is -0.8