Six Sigma DMAIC Process - Measure Phase - Types of Data

There are two types of Data – Qualitative and Quantitative.

Qualitative data is subjective in nature and cannot be measured objectively. It can be ranked or ordered. Quantitative data is objective in nature and can be measured. Qualitative data is further bifurcated as Nominal, Ordinal and Binary whereas Quantitative data is either Discrete or Continuous. Example are described in the below diagram.

Six Sigma - Data Types

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