📊 Data Science
Q. What is the primary objective of "heteroscedasticity testing" in time series analysis?
  • (A) To identify seasonality in the data
  • (B) To test for changing variance in residuals
  • (C) To remove outliers from the data
  • (D) To test for autocorrelation in residuals
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✅ Correct Answer: (B) To test for changing variance in residuals

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