total z score

[abdalla alsmadi]

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

[David Marso]

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