Julio Banks Proposes - Mathcad - ABC (AEDC-Banks-Chauvenet) Outlier Removal Criterion

Dear colleagues, I have used the attached "Outlier Rejection

procedure" for over 20 years to detect outlier data from acquired

thermo-structural tests.

I have tried, unsuccessfully, offering the procedure to AEDC (Arnold

 Engineering Development Center) because I use one of the two

Outlier Detection Methods but they have not shown interest.

Therefore, I am donating it to the PTC Community.

The method is a simple average of the of AEDC's and Chauvenet's

Outlier detection methods criteria resulting in the formula:

C_ABC(n) = (C(n)_AEDC + C(n)_Chauvenet(n)/2

Where "n = sample size"

Ultimately, entered the numerical results into TableCurve 2D

resulting in the formula provided in the attached workbook.

I have successfully used to determine the outlier of:

• Bolt torque (n < 16) in a pipe-to-pipe flange assembly.
• Metal temperature around turbojet engine inlets, n < 24.
• Metal temperature around turbojet engine nozzles, n < 18.

It is my hope that the community members will utilize the

ABC (AEDC-Banks-Chauvenet) Outlier Rejection Criterion. 

to your particular applications.

Enjoy it ☺

---

References

The proposed ABC Outlier Detection Criterion is a result of the

interest inspired by the reference article and reading about the

life Leonhard Euler converting me into a maven or mavin).

1) "The Unreasonable Effectiveness of Mathematics in the

     Natural Sciences"- is a 1960 article by the physicist.

     Eugene Wigner"

2) “A maven (also mavin) is a trusted expert in a particular field,

     who to seeks pass knowledge on to others. The word maven 

     comes from Hebrew, and it means one who understands,

     based  on an accumulation of knowledge”