I have 4 data groups:
– 3 groups from a 5-point Likert scale (1 ~ 5)
– 1 group is binary (Incorrect/Correct — converted to 0, 1)
I have performed Pearson's r and Spearman's rho with the Likert responses easily enough and they appear to be related to a scatterplot. However, the binary data is giving some strange numbers that don't appear to be showing a true relationship (I'm new to using SPSS so this may be the problem).
An alternative I want advice on in the comparison of means. I am aware of paired t-tests but I don't know if they are suitable or if something else is better suited.
I'm especially interested in the relationship between, e.g. a) Perception of x= M:3.12, b) Realisation of x= M:3.95
Best Answer
If you want to compare two groups on three different Likert scales, each scored 1 to 5, you probably want three ordinal logistic regressions, each with a Likert scale as the dependent variable and the group as the independent variable.
I do not know how to do ordinal logistic in SPSS, but it surely can be done.