The Taguchi Quality Loss Function (QLF) demonstrates that as the quality measure of a product declines, the loss due to quality defects: Increases as a quadratic function. Increases as a linear function. Increases as an exponential function. Decreases as a quadratic function. Increases as a step function. Solution Answer: Increases as a quadratic function because quality loss function is based on the work of electrical engineer, Genichi Taguchi. This view disagrees with the traditional (goalpost) view. The quality loss function recognizes that products falling between specific limits are not all equal. The four following statements summarize Taguchi .