What is Six Sigma Calculator?

The Six Sigma Calculator is a free online tool designed to help quality professionals, students, and others perform common statistical calculations used in Six Sigma and quality improvement projects. With an easy-to-use interface, it includes the following key features and functions:

• Process Capability Analysis - Calculate Cp, Cpk, Pp, Ppk, and corresponding yields/DPMOs for your processes
• Sample Size Estimation - Determine the recommended sample size for statistical analyses using power, confidence level, and other inputs
• DOE/Experimental Design - Built-in tools for designing and analyzing factorial and fractional factorial experiments
• Hypothesis Testing - Execute 1-sample, 2-sample, and variance hypothesis tests and identify statistical significance
• Control Charts - Quickly construct variable and attribute control charts like Xbar-R, Xbar-S, Individuals, np, p, c, and u charts
• Process Sigma Level - Convert DPMO and yield rates to process sigma levels for benchmarking
• Data Transformation - Transform data sets using common methods like Box-Cox and Johnson transformations prior to analysis
• Easy Reference Tables - Lookup z-scores, t-scores, critical values, and factors for common Six Sigma problem-solving

With an intuitive layout, examples for guidance, and tools for common Six Sigma techniques and analyses, the Six Sigma Calculator aims to be a valuable free resource for improving quality in products, processes, and systems.

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