Does anyone know of an easy way to determine if a linearity study is acceptable? Each time I calculate it graphically on our software, it runs a straight line at zero. Does that seem correct? Could standard error or goodness of fit (both of which are calculated in the software) be used as an acceptable number? Ex: If standard error is below "whatever number" linearity is acceptable. Our procedure used to direct us to use the % tolerance for acceptability but that is no longer calculated in the software. Any help would be appreciated.