The test is used to determine if the relationship between variables in a linear regression model is truly linear or if it is instead convex or concave.
If "HARVTEST V1.4" refers to a different utility, it may be confused with: Harvest: Time Tracking Software With Invoicing HARVTEST V1.4
It performs a t-test on recursive residuals. If the relationship is non-linear, the mean of these residuals will differ significantly from zero. Hypothesis: Null Hypothesis ( H0cap H sub 0 ): The true relationship is linear. Alternative Hypothesis ( H1cap H sub 1 ): The relationship is non-linear (convex or concave). The test is used to determine if the