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Statistical Inference

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Presentation on theme: "Statistical Inference"— Presentation transcript:

1 Statistical Inference
PSYSTA1 – Week 9

2 Statistical Decision Making Process
Sampling Probability induced by sampling

3 Inferential Statistics
Main Procedures Inferential Statistics Estimation Point Estimation Interval Estimation Hypothesis Testing

4 Estimation Consider: Suppose a university administrator is interested in the average IQ of professors at her university. Key Concepts: point estimate standard error interval estimate confidence level

5 Hypothesis Testing Consider:
Suppose a scientist is interested in determining whether or not marijuana intake significantly increases appetite. Key Concepts: null and alternative hypotheses significance level decision rule; critical region test statistic p-value *effect size

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