Statistics

Residual Calculator

Find the residual between an observed and predicted value.

Calculated Output

Residual 4

Squared residual 16

Formula: residual = observed - predicted

Step-by-Step Breakdown

1. Values used:

2. Observed value = 52

3. Predicted value = 48

5. Residual = Observed value - Predicted value = 52 - 48 = 4

6. Squared residual = 16

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The math behind it

residual = observed - predicted. Positive means above the line; squared residuals feed into the model error.

Observed 52, predicted 48 gives a residual of 4.

Why look at residuals?

Patterns in residuals reveal whether a model fits well.