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Week 8: Exploring a new dataset and Chi-square..  Means, SDs and z-scores problem sheet.  Deadline for coursework.

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Presentation on theme: "Week 8: Exploring a new dataset and Chi-square..  Means, SDs and z-scores problem sheet.  Deadline for coursework."— Presentation transcript:

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

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

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

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

5 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”

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

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

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

9 WHAT TEST TO USE? THE FLOW CHART

10

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


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