Urgent: t-test for observed variables

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hurdemirbilek
PLS Junior User
Posts: 4
Joined: Sun Apr 12, 2020 7:39 am
Real name and title: Hursit Demirbilek

Urgent: t-test for observed variables

Post by hurdemirbilek » Sun Apr 12, 2020 7:56 am

Hi to everyone,

In my model one of the 2nd order construct that has three LVs. The structure is reflective-reflective. (as attached, numbers in paranthesis is t value, numbers in outside paranthesis is path coefficinets)
When I do bootstrapping, surprisingly t statistics of all indicators above are below 1.96 with minimum 1.613 maximum 1.919 as below:
LV1 has 4 indicators
t of Ind1: 1.672
t of Ind2: 1.686
t of Ind3: 1.669
t of Ind4: 1.650
LV2 has 4 indicators
t of Ind1: 1.741
t of Ind2: 1.725
t of Ind3: 1.714
t of Ind4: 1.613
LV3 has 2 indicators
t of Ind1: 1.919
t of Ind2: 1.912

By the way t statistics of all other LV and OV are OK.
What am I suppose to do now?
Attachments
Screen Shot 2020-04-12 at 10.51.27.png
Screen Shot 2020-04-12 at 10.51.27.png (69.09 KiB) Viewed 3530 times

jmbecker
SmartPLS Developer
Posts: 1099
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Urgent: t-test for observed variables

Post by jmbecker » Sun Apr 12, 2020 8:07 pm

What are the loadings? Are they sufficiently high (i.e., larger than 0.7) or not? Usually, loadings are only insignificant if they are small. If they are large, sign changes in the bootstrap could be a problem (i.e., that they flip from +0.8 to -0.8, creating large variation in the estimates).

Or maybe the indicators are just not reflective indicators, but formative indicators?
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Jan_Michael_Becker
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de

hurdemirbilek
PLS Junior User
Posts: 4
Joined: Sun Apr 12, 2020 7:39 am
Real name and title: Hursit Demirbilek

Re: Urgent: t-test for observed variables

Post by hurdemirbilek » Mon Apr 13, 2020 9:59 am

Thanks for your attention.
In fact, factor loadings are not too small.
They were reflective in previous studies.

I revised the model and the problem still exists. I have high loadings but they are not significant. What am I supposed to do?

Lastly, the cause of the problem seems about "no sign changes" option but it is not configurable, I am using 3.2.9. How can I change it?
Attachments
t_stats.png
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factor_loadings.png
factor_loadings.png (120.92 KiB) Viewed 3503 times

Ng11
PLS Junior User
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Joined: Tue Mar 31, 2020 7:05 am
Real name and title: Miss Ng Li Mun

Re: Urgent: t-test for observed variables

Post by Ng11 » Tue Jun 23, 2020 7:30 am

In my case, I have experienced the similar problem where my t-test value is too slow which does not exceed 1.65 and also my p value is too high almost approaching to 1. May I know any solution for this issue? Or how should i justify this based on the obtained results?

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