The first implication of Define phase is development of a Project Charter/Business Case. The Project Charter has to define goals and scope of the Six Sigma Project. The goals have to be specific, measurable, attainable, and relevant and time …show more content…
There are two types of data: qualitative-subjective-can be ranked or ordered for example: binary (pass or fail, Yes/No); nominal (gender, race); ordinal (age group) and quantitative-discrete (number of medication errors) or continuous (amount of time-time to balloon, ED waiting time). Measure phase might make a use sampling for data collection (simple random sampling, cluster sampling, stratified sampling). Sigma Six uses following formula to decide on the sample size (n) for continuous data: n= (1.96ϭ/∆) ^2, and n= (1.96ϭ/∆) ^2*P (1-P) for discrete data. Where P is the estimated percentage of the defective, Δ is the percentage level of uncertainty that we are willing to accept and σ is the estimated standard deviation for the