parameter calculation without dedicated data points

[Gerhard]

Hello,

perhaps somebody can tell me, that this is not possible in Weibull++ (v 7.5), so I don't have so search further on:

I have reliability data, where one data point is not test related. The point is totally outside a Weibull distribution. Is it possible to remain the data point in the data table but "mark" it, so it won't be included in parameter calculation?

At the moment I'm always making a copy of the whole data table and delete there the concerning data points. I don't want to delete the points in the original table, as I want it complete for reference.

Best Regards
Gerhard

[Pantelis]

If you are doing regression analysis you can use the specify points option in the Data menu to do that. Basicly it only regresses on the specified points. Under MLE this is not done.

Another way to approach it would be to use competing failure modes and specify the points you want to separate as another mode.

Hope this helps.

[Gerhard]

Hello,

perfectly! Your first hint is doing exact what I want.

Bye
Gerhard