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Six Sigma is a manufacturing process control strategy which first implemented by Motorola.

Six sigma being common used by any sectors of industry nowadays, especially those precision product manufacturing.

Six Sigma manufacturing implemented to control the process or stabilize the process. Then, seeks to improve the quality of process outputs.

To stable or improve the process, six sigma manufacturing tools need to be used to achieve the target.

Six sigma basic statistical introduction

Describe a value

Before starting all the calculation and analysis, data collection are needed. Data collection shall be collected according to the measurement analysis system. Anyway, assuming 2 sets of data have been collected as shown below:

So, how to describe the value?

The proper way to describe the value not big or small but according to the statistical term as below
Let go to the next page for the calculation formula.

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