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Problem Solving in Basic Quality Tools, Type of Data - Coggle Diagram

- - - - mean-average of data
      - median-middle of data
      - mode-value appear the most
    - - range-numerical distance between maximum and minimum values of data
      - Variance -measure of variability in sample and population
      - standard deviation-square root of variance
  - - - ration of statistical measure .It compare one categorical level to whole.