| cordata | Correlation and Cohen's d effect sizes. | 
| language_test | Language Test in High School | 
| meechua_eff.CI | Calculates and plots treatment and regression effects as also its p-values. | 
| meechua_plot | Plot models from 'meechua_reg' | 
| meechua_reg | Fit linear models on the (replication) data. | 
| plot_mu | Plot t-Statistics and p-Values for Intervention Impact | 
| plot_t | Plot Results for p-values and t-values | 
| replicate_data | Replicates before and after values 100 times. |