S
Seyed
Hey,
I have some problems with my capability analyses of my data. The data that I have are from a Temperature uniformity survey of a heat treatment furnace from the automotive industry. I have used 20 different thermo couples positioned throughout the cross-section of the furnace (imagine two parallel boxes with 10 different thermo couples mounted on each).
The total process time is 7 hours and every three seconds the temperatures are stored from all the thermo couples. Since the data is huge I have averaged the data after each 90 seconds.
How do I know that my data are non-normal? I have performed the Andersson-Darling test and the P-values are less than 0.05 and therefore I assumed that the data are non-normal.
I have also tried to use the Cox-box transformation to transform the data, but I really don’t understand the output as the input is temperature (in the range of 890 - 920C). The output is values in the range of 650E+15 which I don’t understand.
How can I perform a correct Capability analysis and calculate my Pp, Ppk, Cp and Cpk an using my non-normal data? And how can transform the data and understand the output?
Please is there anybody who can guide my throughout this problem. I can give you more information upon request.
I have some problems with my capability analyses of my data. The data that I have are from a Temperature uniformity survey of a heat treatment furnace from the automotive industry. I have used 20 different thermo couples positioned throughout the cross-section of the furnace (imagine two parallel boxes with 10 different thermo couples mounted on each).
The total process time is 7 hours and every three seconds the temperatures are stored from all the thermo couples. Since the data is huge I have averaged the data after each 90 seconds.
How do I know that my data are non-normal? I have performed the Andersson-Darling test and the P-values are less than 0.05 and therefore I assumed that the data are non-normal.
I have also tried to use the Cox-box transformation to transform the data, but I really don’t understand the output as the input is temperature (in the range of 890 - 920C). The output is values in the range of 650E+15 which I don’t understand.
How can I perform a correct Capability analysis and calculate my Pp, Ppk, Cp and Cpk an using my non-normal data? And how can transform the data and understand the output?
Please is there anybody who can guide my throughout this problem. I can give you more information upon request.