One of the usual assumptions for the GLM procedure is that the underlying errors are all uncorrelated with homogeneous variances. You can test this assumption in PROC GLM by using the HOVTEST option ...

The variance-ratio (VR) test statistic, which is based on k-period differences of the data, is commonly used in empirical finance and economics to test the random walk hypothesis. We obtain the ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

The ANOVA analysis of variance test is a fantastic tool when your data follows the normal distribution. Should your data fall ...

PROC ANOVA can compute means of the dependent variables for any effect that appears on the right-hand side in the MODEL statement. You can use any number of MEANS statements, provided that they appear ...