This tutorial contains links to a very incomplete collection of topics. The discussion of each topic may be similarly incomplete. For more complete exposition on these topics consult your textbook and/or instructor. Course materials are currently separated into 5 broad categories. To go directly to the menu for the topic you are interested in, choose from the Quick Search options. Or. . .browse the remainder of this page and see what's available.
Producing Data |
Topic |
Description |
|---|---|
| Types of Variables | Terminology used in classifying the nature and use of variables. |
| Histograms | Details of construction. |
| Boxplots | Details of construction. |
| 68-95-99.7 Rule | The statement of the 68-95-99.7 rule for normal distributions. |
| Pictures of Normal Curves | A page with nothing but pictures of normal curves. Print the page and use it whenever you solve problems involving normal distributions. |
| Summary Statistics | Computing the median, percentiles, quartiles, interquartile range, mean and standard deviation. |
| Prediction Intervals | How to obtain prediction intervals -- easily the easiest formal statistical method to learn. |
Topic |
Description |
|---|---|
| Correlation | Some plots I used for a talk on correlation. You can first "guess" the correlation; then view the correct answers. |
| 2-way Tables | How to display the information in a 2-way cross-classification of categorical data. |
| Association in 2-Way Tables | What it means to say that two categorical variables are "associated." |
| Anscombe's Data | Four data sets, in text form -- to be copied and pasted into a spreadsheet. For each of the four, obtain a linear regression and the correlation. Then compare. |
Topic |
Description |
|---|---|
| Cumulative Probabilities | What they are, how their tabled, and how they relate to probability distributions. |
| Sampling Distributions for Sample Means | The basic results, including the central limit theorem. |
Topic |
Description |
|---|---|
| Significance Testing | A short primer on how a significance test (or hypothesis test -- same thing) proceeds. |
| Tests of Association in 2-Way Tables | Using the Chi-Square test to determine if association exists in a population when data is collected in a 2-way table. |
| CIs and tests for the mean of a population | A short description of the 1-sample inferences when data is quantitative. |