ali shabani - ۱Department of Statistics, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran

The fuzzy regression control chart is a functional technique to evaluate the process in which the average has a trend and the data represents a linguistic or approximate value. The model used in this research is a linear covariate model. ART parameters are used to study the performance of the fuzzy control chart when the parameters of covariate model is increased or decreased. In this paper, theoretical structure of the (a,B) - level fuzzy midrange for (a,B) - Cut fuzzy -regressional control chart is proposed for membership and non-membership functions for GTrIFN .In addition , the real world application is evaluated with fuzzy - regression control chart and fuzzy control charts for membership and non-membership functions for GTrIFN.

Generalized intuitionistic fuzzy number, control chart, regression control chart,(a,B)- level and (a,B) - Cut fuzzy midrange