U
Ualfliers
I have a similar problem that involves PP & PPk - for unilateral tolerances.
> I have 30 wait times with USL of 30. I have averaged the 30 wait time at
> 8.76. For Pp would it just be 30/by 3.4 and for Ppk for unilateral
> tolerances - Ppu (upper) = (USL-Xbar)/(3*stdev) In my case would
> be(30-8.76)/(3 * Stdev) will this get me to my Ppk for Unilateral tolerance.
> My instructor said follow the model for Cpk for unilateral tolerance. I have
> been struggling with this, I do not do this for a living and work with no one
> that does this. Thanks
> I have 30 wait times with USL of 30. I have averaged the 30 wait time at
> 8.76. For Pp would it just be 30/by 3.4 and for Ppk for unilateral
> tolerances - Ppu (upper) = (USL-Xbar)/(3*stdev) In my case would
> be(30-8.76)/(3 * Stdev) will this get me to my Ppk for Unilateral tolerance.
> My instructor said follow the model for Cpk for unilateral tolerance. I have
> been struggling with this, I do not do this for a living and work with no one
> that does this. Thanks