Welcome
What are you trying to do?
A study for my organisation in education.
Your path
Create the study and set the discipline
The discipline decides what every later page shows you.
Decide whether people are involved
If your data is about machines, facilities or finances rather than people, declare no human subjects and the data protection conditions do not apply. The declaration is checked.
Collect or import
Collect through ZStat with consent and withdrawal, or bring a CSV, Excel or SPSS file you already have.
Analyse and compare
Between sites, periods, groups or programmes - with the effect size, because significance alone does not tell a manager whether it matters.
Produce the assurance pack
Generated from your own installation, for a funder or a data protection officer.
What people in your field ask
Define the outcome - account for the school or class - compare or predict - check the test itself.
- Did the new teaching method improve scores?independent t
- Students are inside classes inside schools. Does that matter?multilevel mixed
- What predicts performance?ols regression
- Is my test any good?irt 2pl
- Does the questionnaire work the same across programmes?measurement invariance
Watch for: Analysing at the student level a treatment that was assigned to whole classes.
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