I want to perform a Quadratic regression in SPSS. The dataset includes two variables:
- Independent variable = the proportion of hours worked from home -> (ranges from: 0.00 - 1.00)
- Dependent variable = work engagement (ranges from: 0 - 5)
My problem is how to perform a Quadratic regression in SPSS?
The problem: one of the steps of a Quadratic regression analyses in SPSS is to compute a to create a variable that is squared. But, with a proportion-scale (0.00 - 1.00), this is very different as the size decrease. For example 0.2 - 0.04.
- What is the best way to perform a quadratic regression analyses with a proportion data scale as independent variable?
- How to compute the new squared variable?
Example of the normal procedure (not applicaple here, because square is not possible): https://www.statology.org/quadratic-regression-spss/