Heteroscedasticity test procedure: 5-steps method to understand Goldfield-Quandt and the White Test for Heteroscedasticity
Goldfield-Quandt Step 1: Get the data. Step 2: Second step involves arranging the X1 values from lowest to highest order. Then, divide the series into two groups, n1 and n2 and remember n1, and n2 must less than N/2. n1,n2 being the size of first and second group respectively and N is the size of …