minimum and maximum appropriate number for the samples in estimation of bootstrapping

Frequently asked questions about PLS path modeling.
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aam
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Real name and title: Ali Alitaleb

minimum and maximum appropriate number for the samples in estimation of bootstrapping

Post by aam » Sat Oct 20, 2018 3:03 pm

What is the minimum and maximum appropriate number for the samples in estimation of bootstrapping when we want to conduct confirmatory factor analysis using smart PLS2?

jmbecker
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Re: minimum and maximum appropriate number for the samples in estimation of bootstrapping

Post by jmbecker » Mon Oct 29, 2018 9:15 am

For the bootstrap samples the usual recommendation is the use at least 500 (for an initial screening, because it usually gives already quite good results) and 5,000 for the final model. Generally, the more the better (i.e., the more precise are your estimates of the standard error and the confidence intervals).
Personally, I would say that beyond 5,000 there is not much to gain, but you could also use 10,000 if your system memory allows that.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
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aam
PLS Junior User
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Joined: Fri Aug 24, 2018 11:51 am
Real name and title: Ali Alitaleb

Re: minimum and maximum appropriate number for the samples in estimation of bootstrapping

Post by aam » Tue Oct 30, 2018 1:07 pm

thanks for your reply
I used SmartPls2 and its default value was 200 samples. I did not change it. Is my confirmatory factor analysis wrong?

jmbecker
SmartPLS Developer
Posts: 879
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: minimum and maximum appropriate number for the samples in estimation of bootstrapping

Post by jmbecker » Tue Oct 30, 2018 6:59 pm

It is not wrong, but it might not be very precise. It is especially a problem for effects that are on the edge of being significant or not. If you are able to re-run it, I would go with a larger number.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de

aam
PLS Junior User
Posts: 6
Joined: Fri Aug 24, 2018 11:51 am
Real name and title: Ali Alitaleb

Re: minimum and maximum appropriate number for the samples in estimation of bootstrapping

Post by aam » Wed Oct 31, 2018 9:50 am

Thank you doctor.

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