Free tools for statistics, SPC, OEE, sampling, problem solving, cost and CAPEX decisions. No sign-up.
Each sheet shows the inputs, the formula, and a result you can copy or print. Worked examples use data made up for this site, so you can check the arithmetic before you use your own numbers.
The sheets are DMAIC project, 5 Whys, Cause and effect, Pareto chart, Control charts, Process capability, Type 1 gage study, Descriptive statistics, Distribution fit, Hypothesis test calculator, Sample size calculator, Power and sample size, Statistical tolerance interval, Simple linear regression, Scatter plot, Time series plot, Design of experiments, Reliability analysis, Acceptance sampling plan, OEE calculator, Takt time, demand and capacity, Value stream map, Waste walk audit, Cost of poor output, Cost and quote for new business, CAPEX business case, Page not found.