Determinationskoefficienten (R²)
Determinationskoefficienten, betegnet R², måler andelen af variansen i den afhængige variabel, som forklares af de uafhængige variable i en regressionsmodel. R², som blev introduceret af Karl Pearson i slutningen af det 19. århundrede, er en af de mest anvendte metrikker til at vurdere, hvor godt en model passer til observerede data.
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Method map
The neighbourhood of related methods — select a node to explore.
Kilder
- Pearson, K. (1896). Mathematical contributions to the theory of evolution. Philosophical Transactions of the Royal Society A, 187, 253-318. link ↗
- Pearson, K. (1901). On lines and planes of closest fit to systems of points in space. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 2(11), 559-572. DOI: 10.1080/14786440109462720 ↗
- Fisher, R. A. (1922). On the mathematical foundations of theoretical statistics. Philosophical Transactions of the Royal Society A, 222, 309-368. DOI: 10.1098/rsta.1922.0009 ↗
Sådan citerer du denne side
ScholarGate. (2026, June 3). Coefficient of Determination. ScholarGate. https://scholargate.app/da/model-evaluation/r-squared
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
- Justeret R-kvadrat (R²_adj)Modelevaluering↔ compare
- Akaike Information Criterion (AIC)Modelevaluering↔ compare
- Bayesiansk informationskriterium (BIC)Modelevaluering↔ compare
- Middelfejl (MAE)Modelevaluering↔ compare
- Root Mean Squared Error (RMSE)Modelevaluering↔ compare
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