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PY 603 – Advanced Statistics II

PY 603 – Advanced Statistics II. TR 12:30-1:45pm 232 Gordon Palmer Hall Jamie DeCoster. Introduction to Regression. Travel survey Syllabus Prerequisites (PY 602 topics) Describing a data set Steps to perform a hypothesis test Hypothesis tests of a point estimate.

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PY 603 – Advanced Statistics II

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  1. PY 603 – Advanced Statistics II TR 12:30-1:45pm 232 Gordon Palmer Hall Jamie DeCoster

  2. Introduction to Regression • Travel survey • Syllabus • Prerequisites (PY 602 topics) • Describing a data set • Steps to perform a hypothesis test • Hypothesis tests of a point estimate

  3. Prerequisites (PY 602 topics) • Knowledge of ANOVA • Knowledge of SPSS • Knowledge of Excel • Knowledge of Word – equation editor

  4. Describing a Data Set • Data source vs. data set • Cases • Variables • Unit of analysis • Numeric vs. categorical variables

  5. Steps to Describe a Data Set • Provide a general description of the data set • Describe the subject population • Report the unit of analysis for the data set • Name your variables • Describe what the variable measures • State the units of numeric variables or the groups for categorical variables

  6. Steps to Perform a Hypothesis Test • Determine null and alternative hypotheses • Select a sample • Collect data discriminating the hypotheses • Compute a test statistic • Determine the probability of getting the observed statistic if the null was true • State whether you reject or fail to reject the null hypothesis

  7. Hypothesis Test of a Point Estimate • Tests whether an estimated value is significantly different from a constant • Commonly performed in regression • Values of estimates • Slopes of regression lines • General form

  8. Reporting a Hypothesis Test of a Point Estimate • State the null and alternative hypotheses • Report the estimate • Report the standard error of the estimate • Report the df associated with the standard error • Calculate the t statistic • Report the p-value for the t • State your conclusion

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