Table 1 Measures used to assess the performance of SDMs in estimating βk
Measure | Formula | Role |
|---|---|---|
Relative bias in \({\hat{\beta }}_{ki}\) | \({\frac{{\hat{\beta }}_{ki} - \beta _{ki}}{\beta _{ki}}}\times 100\) | Unbiasedness of \({\hat{\beta }}_{ki}\) |
Standard deviation of \({\hat{\beta }}_k\) | \(\sqrt{\frac{1}{N-1}{\sum }_{i=1}^{N}({\hat{\beta }}_{ki} - \bar{{\hat{\beta }}}_k)^2}\) | Precision of \({\hat{\beta }}_k\) |
RMSE of \({\hat{\beta }}_k\) | \(\sqrt{\frac{1}{N}{\sum }_{i=1}^{N}({\hat{\beta }}_{ki} - \beta _k)^2}\) | Accuracy of \({\hat{\beta }}_k\) |