What is Heteroskedasticity?
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• Regression series (10 videos)
0:00 Introduction
1:41 Techincal definition
5:25 Why care?
8:12 Detection method 1 - Resiudal plots
8:42 Detection method 2 - Goldfeld-Quandt test
12:47 Detection method 3 - Breusch-Pagan test / White's test
15:35 Remedy 1 - White's standard errors
20:24 Remedy 2 - Weighted Least Squares (WLS)
24:45 Remedy 3 - Logarithms
26:05 Examples
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