Updated
Tuesday July 29, 2008 12:00 AM

| dj1480

- Stat formulas in ExcelAll the basic formulas and definition, with Excel calculations and Stat hints
- STATA reference sheetCommon commands defined
### Graduate Student Projects

### Homework

- Homework 2 - CrowleyDescriptive statistics, false positive/negative, SD
- Homework 3- CrowleyConfidence intervals, power, hypothesis testing
- Homework 3B - Crowleyt-tests
- Homework 4 - CrowleyConfidence intervals
- Homework 5 - CrowleyContingency tables, relative risk
- Homework 6 - CrowleyAnalysis of variance
- Extra Credit Homework - CrowleyRegression

### Lecture 1 - Intro & Descriptive Statistics

- Lecture 1 - Handouts not online:Samples: tables, graphs, STATA output, box plots, frequency charts

### Lecture 2 - Normal Distribution & Standardization

- Lecture 2 slidesSamples, means, central tendencies, variance, SD, normal distribution, standard distribution
- Handouts not online- ACTG A5087: sample of actual analysis

### Lecture 3 - Screening Tests & Probabilities

- Lecture 3 slidesScreening tests, probabilities, sensitivity and specificity, ROC curves
- Lect 2 - handouts not on-line- Answering Marilyn's Question (Positive Predictive Value) - Screening test for TB (prior probabilities, posterior probability) - ROC Curve (the trade-off between sensitivity and specificity)

### Lecture 4 - The Central Limit Theorem

- Lecture 4 slidesCentral limit theorem, hypothesis testing, p-values, alpha/beta errors
- Central Limit Theorem - handoutThe mathematics of the CLT, explained
- CLT Example - Article about HIV2 pages of text, 4 pages of data. Y!
- Central Limit - HIV Example 2More data, smaller print

### Lecture 5 - Hypothesis Testing & t-tests

- Lecture 5 topics- Review of hypothesis testing - Z-test - t-tests, t-distribution - degrees of freedom - one-sample population mean - two independent samples - dependent (paired) samples
- Lecture 5 materials not online- The slides (not found) - Summary definition of Z-test, t-test; assumptions and conditions - Example: Level of Benzene in a Cigar

### Lecture 6 - Sample Size

- Lecture 6 slidesSample size and power; steps to determine sample size; impact of variability (SD); calculations; adjustments

### Lecture 7 - Mid-term review

- Mid Term Reviewnote: powerpoint slides
- Sample Mid-term examFrom Spring of 2004

### Lecture 8 - Confidence Intervals

- Lecture 8 slidesConfidence intervals, inference vs. hypothesis testing
- Review of Confidence IntervalsMore math

### Lecture 9 - Proportions

- Lecture 9 slides - part IProportions, counts, binary data, inference on proportions
- Lecture 9 slides - part IIEstimation of proportion, hypothesis testing on proportions
- Lecture 9 slides - part IIIWorking through an example of counts and proportions

### Lecture. 10 - Contingency Tables

- Lecture 10 slidesCategorical data, chi-square tests, exact tests, Odds Ratio, interactions, Mantel-Haenszel methods
- Lecture 10 handouts not on-line- Additional slides re Contingency tables - Chi-square examples - OR examples, 3x2x2 tables - Racial profiling example

### Lecture. 11 - Analysis of Variance (ANOVA)

- Lecture 11 slidesANOVA
- Material not on-lineSlides part II - ANOVA: hypothesis testing for 3 or more means; bonferroni corrections

### Lecture. 12 - Correlation & Linear Regression

- Lecture 12 slides - part ISimple linear regression; pearson correlation coefficient; Spearman rank correlation coefficient; least-squares method; residuals; CI of regressions; Multiple regression
- Lecture 12 slides - part IICorrelation: hypothesis testing; degrees of freedom; analysis of variance; the F test of linear association; regression as an alternative to correlation
- Example: Growth vs DoseSimple correlation

### Lecture. 13 - Clinical Trials

- Lecture 13 slidesClinical Trials: the process for testing a new drug or device; statistical issues: randomization, stratification, blinding, designs, non-inferiority study

### Lecture. 14 - Final Review

- Final Review slidesConfidence intervals, Proportions, Contingency tables, ANOVA, Correlation, Regression, Clinical trials

### STATA Labs