3.03.1 Simple Six Sigma Calculator 53c6v

Six Sigma Calculator The calculation of a Sigma level, is based on the number of defects per million opportunities (DPMO). In order to calculate the DPMO, three distinct pieces of information are required: a) the number of units produced b) the number of defect opportunities per unit c) the number of defects The actual formula is: DPMO =

(Number of Defects X 1,000,000) ((Number of Defect Opportunities/Unit) x Number of Units)

Example: A manufacturer of computer hard drives wants to measure their Six Sigma level. Over a given period of time, the manufacturer creates 83,934 hard drives. The manufacturer performs 8 individual checks to test quality of the drives. During testing 3,432 are rejected. Defects Opportunities Defect Opportunities per unit

Six Sigma Table:

3432 83934 8 1

690,000

2

308,000

3

66,800

4

6,210

5

320

6

3.4

DPMO Sigma Level

Source for this file: http://home.xtra.co.nz/hosts/smtconz/Quality/Simple%20Six%20Sigma%20Calculator.xls

5111.16 4.1

Six Sigma Calculator A. All values required to calculate Sigma level Defects: 2 Units: 100 Opportunities per Unit: 2

Enter values in Gray cells only

DPMO: Sigma Level:

10,000 3.83

B. Sigma calculated based on defects and number of opportunities Defects: 2 DPMO: Number of Opportunities: 250,000 Sigma Level:

8 5.81

C. Enter only the known Defects Per Million Opportunities Enter DPMO 66,000 Sigma Level:

3.01