8 Skill Builder: Regression 0 Points Grading comment: It is important to understand the difference between y y, y ^ y ^ , and ^ y ^ y in regression. In the plot below, three letters are labeling terms we've learned in class. In this question, we will ask you to match the correct letter (a, b, or c) to the corresponding term ( y y, y ^ y ^ , or ^ y ^ y ) WeChata8cc63a0316f6b103d2c0e9ae58e22b2.jpg Question 8.1 Symbol and definition I Q8.1 Symbol and definition I 0 Points Grading comment: Please select the correct letter (a, b, or c) and definition for y y. Note: To receive credit, both the letter and the definition must be correct. Choice 1 of 6: It represents the predicted value of the response variable (y) found using the regression model at a given x. Choice 2 of 6: It represents the mean of all the response values in the data set. Choice 3 of 6: a Choice 4 of 6: c Choice 5 of 6: b Choice 6 of 6: It represents the observed response, which is a value in the