Name Test Mark (x) Homework (y)

Question

Rob 61 35
Thomas 95 50
Mark 44 5
Wanda 93 50
Judy 63 15
Haydn 80 34
Barbara 62 16
Karen 95 50
Marilyn 65 7
Phil 88 38

A. What is the equation for the Linear Regression Line? _____________

B. There is a ________________________
correlation between the test marks and the homework marks.

C. The slope of the line best fit can be used to make a probabilistic interpretation that states ________________

Responses

y= -37x + 1

y= 0.89x-36.7

y= 0.7x-38

y=-x+37

no correlation

positive

negative

The test mark increases 1 pt for every 1 pt on the homework mark.

The homework mark increases 0.89 points for every 1 pt. on the test mark.

The test mark decreases 0.7 pts for every 1 on the homework mark.

The homework mark increases 37 pts for every 1 pt. on the test mark

Answer 1

A. The equation for the Linear Regression Line is y= 0.89x-36.7.

B. There is a positive correlation between the test marks and the homework marks.

C. The slope of the line best fit can be used to make a probabilistic interpretation that states the homework mark increases 0.89 points for every 1 pt. on the test mark.