I used the following code to retrieve a confidence level for my data: c <- t.test(my_data$my_col, conf.level = 0.95) c This returns something like: data: my_data$my_column t = 30, df = 20, p-value < 2.1e-14 alternative hypothesis: true mean is not equal to 0 95 percent confidence interval: 62.23191 80.11201 sample estimates: mean of x… Read More How to extract lower and upper bounds from confidence level in R from t test function?