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faustoG
faustoG
Level I

Individual Control Chart

Oct 3, 2024 09:30 AM (5654 views)

here you find 54 individual data, exponentially distributed.

JMP analyses the data and provides a STRANGE Control Chart

Why?

See the attached file

Fausto Galetto

Preview file
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61 REPLIES 61
faustoG
faustoG
Level I

Re: Individual Control Chart

Oct 10, 2024 11:40 AM (351 views)  |  Posted in reply to message from statman 10-10-2024

@ statman, Super User

YOU WRITE:

  1. I'm still not sure why mean time to UTI is exponentially distributed....
  2. seems it should be randomly (normally) distributed, unless there are actions being taken on the process.
  3. "All models are wrong, some are useful" G.E.P. Box

 

YOU do not want to accept that

  • The data are exponentially distributed....
  • NOT “mean time to UTI”
  • randomly distributed DOES NOT MEAN normally distributed
  • some ideas on models are TOTALLY WRONG

 

I ask you again to find a case you trust …

 

faustoG

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Jeff_Perkinson
Community Manager Jeff_Perkinson
Community Manager Community Manager

Re: Individual Control Chart

Oct 12, 2024 12:24 PM (258 views)  |  Posted in reply to message from faustoG 10-03-2024

It doesn't seem that this thread is going to progress in a positive manner so I am turning comments off.

Jeff Perkinson

JMP User Community Moderator

-Jeff