Select only one statement 1. (1 mark) Which of the following statement is correct? 2 The intercept of a regression line describes the average change in the Y-variable for each 1-unit change in the X-variable. For the least squares regressions, the average pattern seen in the scatter plot must be a straight line. In regression, we can use the Y-variable to predict values for the X-variable. 3 In regression, the X-axis and the Y-axis play the same role. 2. (1 mark) Which of the following statement is correct?