alleryStart learning →Points of the fitted line are written with which notation for the predicted value?
Ay-prime
By-star
Cy-hat
Dy-bar
Answer & Solution
Correct answer: C. y-hat
1. Observed values and predicted values need to be told apart.
2. Each point of data is of the form (x, y).
3. Each point of the line of best fit using least-squares linear regression has the form (x, y-hat).
4. The hat marks the value the line predicts rather than the value observed.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 12 'Linear Regression and Correlation', sections 12.1-12.6_
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