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DSST Principles of Statistics Exam Prep

Category - DSST Statistics Free Test Prep

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In linear regression, the total variation explained by the variation attributable to the relationship between X (the independent variable) and Y (the dependent variable). Unexplained variation is attributable to factors outside of X. What is this variation called?
  1. total sum of squares
  2. regression sum of squares
  3. linear sum of squares
  4. error sum of squares
Explanation
Answer: D - The error sum of squares (SSE) is the unexplained variation in linear regression.

Key Takeaway: In linear regression, the effect of the independent variable on the dependent variable plus outside factors contribute to the development of a linear regression model. For example, if the effects of smoking on the development of lung cancer, outside factors could be environmental factors or radiation exposure.
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