Week 8: Exploring a new dataset and Chi-square.

 Means, SDs and z-scores problem sheet.  Deadline for coursework.

 Looking at data from maths education questionnaire (week 2).  Hypotheses.  Levels of measurement.  Chi-Square problem sheet.

 Maths questionnaire (week 2).  Open data on Graham’s website “maths questionnaire SPSS data”  Which variables are categorical and which are continuous?

Can be either:  Continuous Hypothesis: ◦ Should be tested with 2 continuous questions ◦ e.g. “relationship between secondary school teacher kindness and maths anxiety ”  Categorical Hypothesis: - ◦ Should be tested with 2 categorical questions ◦ e.g. “association between gender and studying Psychology at A-level”

 Continuous Hypothesis: ◦ Inferential statistics: regression (week 9) correlation (week 10).  Categorical Hypothesis: - ◦ Inferential statistics: Chi-Square test of association (today).

 Find past research whilst choosing hypothesis.  Hypothesis should be theoretically motivated.  Think about what analysis you want to do.

Nominal “Name” E.g. Gender Ratio “Real zero” E.g. Height Interval “Imaginary zero” E.g. Temperature Ordinal “Order” E.g. Horse racing

WHAT TEST TO USE? THE FLOW CHART

 Come up with a hypothesis by next week.  Next Week: lab report refresher and regression.