R^2 and Q^2

Frequently asked questions about PLS path modeling.
Post Reply
nayabeyes
PLS Expert User
Posts: 74
Joined: Wed Nov 23, 2011 7:34 am
Real name and title:

R^2 and Q^2

Post by nayabeyes » Wed Jul 10, 2013 5:11 pm

Hi please,
Why my R^2 and Q^2 values exactly same? (I used second-order construct with reflective dimensions)
Is Predictive relevance (Q^2) is applicable to second-order construct (with reflective dimensions),
Please help urgently. BR
MURAD ALI, Ph.D

User avatar
Hengkov
PLS Super-Expert
Posts: 1618
Joined: Sun Apr 24, 2011 10:13 am
Real name and title: Hengky Latan
Location: AMQ, Indonesia
Contact:

Post by Hengkov » Fri Jul 12, 2013 2:12 pm

Hi,

R^2 & Q^2 have same purposes for predictive models. So, the result both not different.
You know, If you have simple model, one exogenous and one endogenous variables, the result f^2 = q^2 = R^2 = Q^2 OK.

Regards,

nayabeyes
PLS Expert User
Posts: 74
Joined: Wed Nov 23, 2011 7:34 am
Real name and title:

Post by nayabeyes » Fri Jul 12, 2013 3:06 pm

Dear Hengkov,
Thank you so much. I would be extremely thankful for if any specific reference. and second:

Is Predictive relevance (Q^2) is applicable to second-order construct (with reflective dimensions).
Regards.,
MURAD ALI, Ph.D

User avatar
Hengkov
PLS Super-Expert
Posts: 1618
Joined: Sun Apr 24, 2011 10:13 am
Real name and title: Hengky Latan
Location: AMQ, Indonesia
Contact:

Post by Hengkov » Fri Jul 12, 2013 9:53 pm

Hi,

Not reference mention that. This is my experience and it's true. Yes, Q^2 can applicable in 2nd construct (molecular).

Regards,

nayabeyes
PLS Expert User
Posts: 74
Joined: Wed Nov 23, 2011 7:34 am
Real name and title:

Post by nayabeyes » Sat Jul 13, 2013 7:25 am

Dear Hengkov,
Really thank you. I got it.
MURAD ALI, Ph.D

Post Reply