1. A curved or non-linear association between x and y
is possible, but beyond the scope of this course
can be constructed using Excel's Solver add-in
is not compatible with the method of least squares
can be constructed using Excel's "Add Trendline" capability
2. In the linear regression equation, y = a + bx, the constant, b, represents
the slope of the regression line
the correlation between x and y
the coefficient of determination
the y-intercept