Variance Analysis of Hall Call Response Time: Trading Mean Hall Call Response Time for Increased Variance Performance.

Modern day computerized elevator dispatch systems utilizing cost function minimization techniques show that the statistical variance of the hall call response time can be decreased, making the system less random. A measure of variance performance has been derived in a prior paper called ‘Variance Performance Factor’. Using this measure, I will investigate if there is a direct relationship that can be controlled between the mean and the variance. In other words, can mean response time be traded for increased variance performance?