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Testing a timeseries for heteroscedastic (lmtest)
Simon Ohrem
·
Jan 14, 2004
·
r-help
Hello, my intention is to test a given timeseries (vector) for heteroscedastic. Now I found the gqtest/bptest/hmctest in the lmtest package but a "formula" as argument is needed. What is meant by formula and how du I interpret...
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