Inference Practice for AS2.9. PPDAC - The Problem: I wonder if the median… I expect…

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Presentation transcript:

Inference Practice for AS2.9

PPDAC - The Problem: I wonder if the median… I expect…

PPDAC The Plan I will use a computer to select… Comment on reliability of method: Comment on size of the sample

PPDAC - Analysis What I See: My dotplots: My boxplots: Possible reasons:

PPDAC - Analysis Calculations: My informal confidence interval for the females’ incomes: My inference:

PPDAC - Analysis Calculations: My informal confidence interval for the males’ incomes: My inference:

PPDAC – Conclusion Answer to question + justification:

PPDAC – Conclusion Comment on sampling variablilty

PPDAC – Conclusion Comment on effect of sample size

PPDAC – Conclusion Further comments integrating contextual and statistical knowledge throughout the statistical enquiry cycle

PPDAC – Conclusion Further comments, eg, on limiting factors in the definition of the groups, or the impact of other factors on the reliability of estimates.