I don't have a lot of experience is statistics. Can someone guide me on how to identify variation in my measured data? I need to know how much variation is present so engineering can adjust tolerances accordingly and also to make sure the CMM is trustworthy.
I placed a part in a fixture and ran my measurement routine. I did a do/unitl which gave me 6 reports and 6 rows in excel for each part serial number. Data was written directly into excel. Part remained in the fixture for the duration of the inspection.
Here is 1 part with its 6 runs.
| Serial | Run # | ID | OD | TP | X Axis | Z axis |
| 1 | 0 | 3.0768 | 2.679 | 0.005 | -0.0024 | 0.0006 |
| 1 | 1 | 3.0769 | 2.679 | 0.0051 | -0.0025 | 0.0005 |
| 1 | 2 | 3.0768 | 2.6789 | 0.0051 | -0.0025 | 0.0006 |
| 1 | 3 | 3.0769 | 2.6789 | 0.005 | -0.0024 | 0.0006 |
| 1 | 4 | 3.0768 | 2.6789 | 0.005 | -0.0024 | 0.0006 |
| 1 | 5 | 3.0771 | 2.6789 | 0.0051 | -0.0025 | 0.0007 |
