Individual Control Chart

[#1]

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

[#2]

@ 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

[#3]

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