# How to calculate Machine Capability Study using Minitab

V

#### vimalvg

Hi,
Can any one let me know how to calculate machine capability study using minitab 16.

Thanks
Vimal

Super Moderator

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V

#### Vasant

Dear Vimal,

Thanks for question, Just now I done calculation of Cm, Cmk in Minitab, it is more or less same as Pp Ppk but machine capability study to be conducted with some condition whic h I will tell you later.

regards

Vasant

T

#### tburian

Vasant,

You mentioned that machine capability study had to be done with some conditions which you would tell later. I cannot see any further information on this from you.

Will you please share your experience with machine capability study in Minitab with Elsmar community? In fact, Minitab Help does not give any hint in this.

Many thanks,

Tomas
SSBB candidate
(exam passed, certification project not finished yet)

#### Miner

##### Forum Moderator
Staff member
Minitab can analyze a Machine Capability study, but will not provide the Cm/Cmk metrics.
1. Collect your data for the standard machine capability study
2. Enter the data into the Minitab worksheet in the standard format
3. For subgroup size, enter the size for the entire study

A machine machine capability study presumes that all samples are consecutive and is a measure of short term variation only.

Minitab uses within subgroup variation to calculate Cp/Cpk. When all measurements are within a single subgroup, the calculation for Cp/Cpk (in Minitab) equals Cm/Cmk. However, it does not label it as such.

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