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name

rob , thomas, mark, wanda, judy, haydn, barbara, karen, marilyn, phil

test mark (x)
61,95,44,93,63,80,62,95,65,88

homework mark (y)
35,50,5,50,15,34,16,50,7,38

desmos graphing calculator: use the link to access the graphing calculator. open a table and input the data. ask the calculator for a linear regression line

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 of best fit can be used to make a probabilistic interpretation states. _

1 answer

a. The equation for the linear regression line is y = 0.5407x + 12.0697.

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

c. The slope of the line of best fit can be used to make a probabilistic interpretation stating that for every increase of 1 unit in the test marks, there is an average increase of 0.5407 units in the homework marks.
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