using spss transforming variable - compute
Post on 23-Jun-2015
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USING SPSS
TRANSFORMING DATA
(COMPUTE)
Transform Compute
Transform Compute
This is to compute (i.e. creating) a new variable from the existing variables in the data file.
Now, we are going to compute a new variable “Participation” form the variables p1, p2, p3, p4, and p5
(Assuming items “p1 – p5” are questions related to participation in decision-making)
Note: SPSS allows a maximum of eight characters in a variable name, so we are going to use “PARTICPN” for “Participation”.
The following slides will explain how this is done.
Transform Compute Dialog Box
Type “PARTICPN” in the Target Variable box
Type (p1+p2+p3+p4+p5) in the Numeric Expression box
(p1+p2+p3+p4+p5)
Press “OK” to execute the process
The new variable “PARTICPN” has been created.
These are the scores of “PARTICPN” for the respondents
We can also compute our new variable by calculating its mean.
To do this we need to ask SPSS to divide the sum of “p1+ p2 + p3 + p4 + p5” by 5 (because there are 5 items)
Lets do this again, but this time we want the mean for the five items related to “Participation”.
Since we already have a variable “PARTICPN” in our data, we need to choose a different variable name. I’m going to use “MEANPART” this time.
Transform Compute
Type “MEANPART” in the Target Variable box
Type “(p1+p2+p3+p4+p5)/5” in this Numeric Expression box
Press “OK” to execute
Our new variable “MEANPART” has been created
These are the scores of “MEANPART” for the respondents
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