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#### OmarEn

Hello everyone,

I am a bit confused about a cpk study I am analysing (Attached).

The cpk and ppk are very good. this is a tube cutter and we collected the data with a caliper. in the length 508.0mm the P value is 0.177 which means a normal distribution. But in the 156.0mm lenght P value is less than 0.005.

indices are pretty good and there are not points out of control.

does anyone know why my data is not normal? and what can I do with this information so I can share it with my customer?

Thanks in Advance,

Regards

I am a bit confused about a cpk study I am analysing (Attached).

The cpk and ppk are very good. this is a tube cutter and we collected the data with a caliper. in the length 508.0mm the P value is 0.177 which means a normal distribution. But in the 156.0mm lenght P value is less than 0.005.

indices are pretty good and there are not points out of control.

does anyone know why my data is not normal? and what can I do with this information so I can share it with my customer?

Thanks in Advance,

Regards