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What is meant by residuals in statistics?

Sagot :

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  • In statistical models, a residual is the difference between the observed value and the mean value that the model predicts for that observation. Residual values are especially useful in regression and ANOVA procedures because they indicate the extent to which a model accounts for the variation in the observed data.✍

Answer:

A residual is a deviation from the sample mean. Errors, like other population parameters (e.g. a population mean), are usually theoretical. Residuals, like other sample statistics (e.g. a sample mean), are measured values from a sample.

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