What is the first step you should take if you need to find the correlation coefficient for this graph without using a computerized tool?

a ) construct the estimated regression line.

b ) calculate the residuals.

c ) calculate the mean of the residuals.

d ) find the difference between each y-value and the predicted value.

answer correctly

There are points marked on the coordinate plane in the form of Ordered pair that is (x,y).

→First we Construct estimated regression line,then we calculate residuals, that is among number of lines which we predicted or drawn as a regression line ,which line can be best regression line.

→Residuls tells which Regression line is best among Number of lines drawn as a regression line.

So, the first step will be

Option A

Construct the estimated Regression line.

step-by-step explanation:

image for option 4

step-by-step explanation:

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