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Welcome to the OPOSSEM Wiki 43 articles in English

How to get involved

To login to the OPOSSEM wiki, users first need to create an account at the main OPOSSEM site. Then, when they return to wiki.opossem.org, they will be logged in here and have an account automatically created. [This is not yet fully automated; bear with us. If you change your name at the main site, you will end up with 2 wiki accounts.]

1. Before editing or creating pages, please read about OPOSSEM's special organization. This explains how the wiki organizes textbook pages, glossary items, and the snippets of code that call up equations.
2. Choose a page from the list on the right, and start creating a page.
3. Help add to our documentation by adding a suggestion to Help:Wanted. Or, help elaborate the norms and standards of our community by adding a page to the OPOSSEM namespace (OPOSSEM:PageName).
4. You can also edit, update or add to the list of definitions.
5. Or you can clean up links in our pages by adding links to the appropriate Wikimedia pages. See Special:WantedPages for a list of broken links. Go to the pages with the link (follow the "cited by" link), and correct it using the appropriate Interwikimedia_links.
6. Add a task or suggestion to the To_Do page.

List of textbook pages that need creating

Below is the list of modules identified/created at last summers' OPOSSEM workshops. Feel free to add and/or revise this list. Please keep in mind that these pages/articles will later need to be edited/combined into textbook chapters.

• Logic of scientific inquiry, including how its done in political science, (linking theory to hypotheses generally and hypothesis testing)
• Philosophy of science
• Research ethics
• Elements of research design
• Presenting research, components of a research paper
• Causality
• Measurement
• Sampling
• Quantitative Methods (overview)
• Survey Research (overview)
• Qualitative Methods (overview)
• Univariate descriptive statistics (mean, median, mode, variance, standard deviation)
• Univariate data visualization, including displaying data (graphing, interpretation of graphs) and statistical distributions of univariate data (including outliers)
• Bivariate descriptive statistics, (crosstabs and the mechanics of doing cross tabs, including adding a 3rd variable and problems)
• Probability theory and inference
• Statistical distributions, (and central limit theorem , z, t, and F)
• Hypothesis testing (alpha, power, etc.)
• Confidence intervals
• Single sample tests of means and proportions large and small samples
• Tests of differences of means and proportions
• Association
• Measures of association, nominal variables (Pearson's chi-square)
• Measures of association, ordinal variables
• Measures of association, interval variables Pearson’s R
• ANOVA: Analysis of Variance
• Bivariate linear regression
• Multivariate linear regression
• Multivariate linear regression, diagnostics
• Linear regression, measures of fit
• Logistic regression

Online resources and tools

(feel free to add others here)

• Wikipedia Statistics Portal
• OPOSSEM workshop materials
• OPOSSEM instructional materials
• U of T stats page
• MUTT? Pomona stats page
• Open Learning Initiative: Statistics (CCL material)
• Wikipedia Cateogry: Research Methods
• Wikipedia Category:Social_sciences_methodology