On the Detection of Heteroscedasticity by Using CUSUM Range Distribution

In this paper, we present a new method for checking the heteroscedasticity among the error terms. The method is based on the CUSUM Range distribution. We derive the CUSUM Range distribution (under the assumption of homogeneity) and use it to test for heteroscedasticity. The method seems to detect heteroscedasticity when it is present among the error terms.