Re: total z score

Posted by David Marso on Mar 25, 2013; 10:15pm
URL: http://spssx-discussion.165.s1.nabble.com/total-z-score-tp5719075p5719076.html

You can certainly add z-scores but it is NOT the same as z scores calculated on a total score.
A minute or two of thinking about it will be convincing enough!
--

abdalla alsmadi wrote

Hi
I have a data about torrance creative thinking test, and i did the following:
 
fluency raw score converted to a standard z sscore (flz)
flexibility raw score converted to a standard z sscore(flxz)
origanality raw score converted to a standard z sscore (orgz)
now
to find a z score for the total raw score of the whole test
I computed totalz = (flz+flxz+orgz)
then
i computed a z score for the last variable
my question:
can we add different z scores to make the new variable totalz????

thanks a lot

Abdalla Alsmadi
college of graduate studies
Arabian Gulf University - Bahrain
Tel: [phone] ext. 676