QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
What is the difference between $y-\hat{y}$ and $\hat{y}-\bar{y}$ ?
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Step 1I'll solve this problem step by step, carefully explaining the difference between these statistical notation terms.
Step 2: Understanding $y$
- $y$ represents an individual observed value in a dataset
- This is the actual, raw data point from a sample or population
Final Answer
- $y - \hat{y}$ measures individual prediction error - $\hat{y} - \bar{y}$ measures the model's deviation from the mean
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