Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: PCA: Principal Components as weighted sums of standardized variables (error in MV Ref. Manual?)
From
Partho Sarkar <[email protected]>
To
[email protected]
Subject
Re: st: PCA: Principal Components as weighted sums of standardized variables (error in MV Ref. Manual?)
Date
Fri, 17 May 2013 18:10:06 +0530
Please ignore this post-my apologies! I had made a mistake of my own
in typing the formula. With the correct formula below, the manual
and my results agree:
gen pc1try = 0.4011*std_lft500 + 0.4210*std_lft1000
+0.3664*std_lft2000+0.2809*std_lft4000+0.3433*std_rght500+0.4114*std_rght1000+0.3115*std_rght2000+0.2542*std_rght4000
Regards
Partho Sarkar
On Fri, May 17, 2013 at 5:54 PM, Partho Sarkar
<[email protected]> wrote:
> I have just started using Stata for PCA, and am puzzled by a seeming
> error in the Multivariate Statistics Reference Manual.
...
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/