| OptSig-package | Optimal Level of Significance for Regression and Other Statistical Tests | 
| data1 | Data for the U.S. production function estimation | 
| Opt.sig.norm.test | Optimal significance level calculation for the mean of a normal distribution (known variance) | 
| Opt.sig.t.test | Optimal significance level calculation for t-tests of means (one sample, two samples and paired samples) | 
| OptSig | Optimal Level of Significance for Regression and Other Statistical Tests | 
| OptSig.2p | Optimal significance level calculation for the test for two proportions (same sample sizes) | 
| OptSig.2p2n | Optimal significance level calculation for the test for two proportions (different sample sizes) | 
| OptSig.anova | Optimal significance level calculation for balanced one-way analysis of variance tests | 
| OptSig.Boot | Optimal Significance Level for the F-test using the bootstrap | 
| OptSig.BootWeight | Weighted Optimal Significance Level for the F-test based on the bootstrap | 
| OptSig.Chisq | Optimal Significance Level for a Chi-square test | 
| OptSig.F | Optimal Significance Level for an F-test | 
| OptSig.p | Optimal significance level calculation for proportion tests (one sample) | 
| OptSig.r | Optimal significance level calculation for correlation test | 
| OptSig.t2n | Optimal significance level calculation for two samples (different sizes) t-tests of means | 
| OptSig.Weight | Weighted Optimal Significance Level for the F-test based on the assumption of normality in the error term | 
| Power.Chisq | Function to calculate the power of a Chi-square test | 
| Power.F | Function to calculate the power of an F-test | 
| R.OLS | Restricted OLS estimation and F-test |