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# Stochastic Processes

• ### Star Library: Rectangularity

This article describes an interactive activity illustrating sampling distributions for means, properties of confidence intervals, properties of hypothesis testing, confidence intervals for means, and hypothesis tests for means. Students generate and analyze data and through simulation explore these concepts. The activity is completed in three parts. The three parts of the activity can be used in sequence or they can be used individually as "stand alone" activities. This allows the educator flexibility in utilizing the activity. Part I illustrates the sampling distribution of the sample mean. Part II illustrates confidence intervals for the population mean. Part III illustrates hypothesis tests for the population mean. This activity is appropriate for use in an introductory college or high school AP statistics course. Key words: sampling distribution of a sample mean, confidence interval for a mean, hypothesis test on a mean, simulation, random rectangles
• ### Star Library: Histogram Sorting

This activity provides students with 24 histograms representing distributions with differing shapes and characteristics. By sorting the histograms into piles that seem to go together, and by describing those piles, students develop awareness of the different versions of particular shapes (e.g., different types of skewed distributions, or different types of normal distributions), that not all histograms are easy to classify, that there is a difference between models (normal, uniform) and characteristics (skewness, symmetry, etc.). Key words: Histogram, shape, normal, uniform, skewed, symmetric, bimodal
• ### Data Collection: Uncle Sam's Reference Shelf

This web page contains concise historical information from the Census Bureau in either pdf or Excel format.
• ### Econometrics

This course covers the statistical tools needed to understand empirical economic research and to plan and execute independent research projects. Provided on the site are assignments and a project idea with related materials. Topics include statistical inference, regression, generalized least squares, instrumental variables, simultaneous equations models, and the evaluation of government policies and programs.
• ### Data Collection: USDA Economics and Statistics System

This site contains statistics on crops, food consumption, weather, and other agricultural variables.
• ### Portraits of Statisticians

This page contains links to photographs of famous statisticians. Other Keywords: picture, pictures, photo, photos, portrait, portraits.
• ### Control of Manufacturing Processes

This course features a complete set of lecture notes and problem sets with solutions. The objective of this subject is to understand the nature of manufacturing process variation and the methods for its control.
• ### Data Collection: Bureau of Economic Analysis

This site for the Bureau of Economic Analysis contains economic information such as gross domestic product, personal income and outlays, corporate profit, etc. It addresses national, international, regional, and industry level statistics.
• ### Data Collection: CDC Data and Statistics

This page from the Centers for Disease Control website contains links to statistics about health and disease in the United States.
• ### Writing Learning Objectives

This short article gives a basic outline of Bloom's Taxonomy and writing learning objectives. It includes a brief description of what types of verbs to use in writing learning objectives and links these verbs to the levels of Bloom's Taxonomy.