The least-squares regression equation computed from the sample set of data was \hat{y}=0.4069-0.7765x. Given this equation, what is the correlation between x = number of letters with dominant hand and y = number of letters with nondominant hand? Submit your answer rounded to four decimal places.

I don't want to add up these vertical distances because some will be positive and some negative. Instead, I will add up this vertical distance squared such that:

So, let me assume that my best fit linear function has the form:

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8