Descriptive statistics, t-table confidence intervals for the mean, and simple linear regression on engineering data. Use when summarising lab or process data, computing a mean CI for sample data, or fitting a one-predictor linear regression. Don't use for autocorrelated process time-series (use time-series-process-data-analysis), censored lab data (use censored-regression), compositional data (use compositional-data-analysis), or hierarchical / multi-level models (use bayesian-hierarchical-process-models).
