What are the steps for spss heteroskedasticity test?

spss heteroskedasticity test steps: first save the residuals according to the regression results; then calculate the square of the residuals; finally draw a scatter plot of the squared residuals and "X", and make a weighted least squares method Just return.

First, you must save the residuals according to the regression results, calculate the square of the residuals, and then draw a scatter plot of the squared residuals and X.

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The steps are as follows:

(1) During regression calculation, click [ in the regression main dialog box Save] button, select the [Unstandardized] option in [Residuals], and click [Continue] to return to the main dialog box. While outputting the results, the residuals will be saved as a new variable res_1.

(2) Calculate the square of the residual. Select [Transform] => [Compute], and enter the variable name of the residual square (such as e2) and the expression for calculating the residual square (such as res_1 **2) in the displayed dialog box. A new variable will be generated after clicking [OK].

(3) Using the weighted least squares method (WLS), the weight can be set to 1/|e|. Just do a weighted least squares regression.

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