# Estimation Principles

• ### Cartoon: Statistical Movies

A cartoon to teach about the importance of providing measures of error, like the Margin-of-Error, with estimates. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.
• ### Cartoon: Confidence

A cartoon to teach about the interpretation of confidence in inference. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.
• ### Cartoon: Professor's Directions

A cartoon for teaching that confidence intervals do not always contain the true parameter. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.
• ### Sample Sizes

This resource discusses sample sizes and how they are chosen.
• ### Song: It Had to be Mu

Song celebrates advantages of the mean (over the mode and median) and includes conceptual references such as BLUE and MAD. May be sung to the tune of "It Had To Be You" (Gus Hahn and Isham Jones). Musical accompaniment realization and vocals are by Joshua Lintz from University of Texas at El Paso.

• ### Song: The Statistics Song

Song encourages critical thinking about how surveys are conducted and presented in the media. Published at www.tomsnyder.com/products/productextras/SCISCI/statisticslyrics.html
• ### Explorations for the Area Probability Applet

This website provides the URL of a Java applet and steps for using it. Here, students can manipulate the size of the circle and the rectangle to explore the probability that a point in the rectangle is also in the circle.
• ### Analysis Tool: Confidence Interval Simulation

This Java applet demonstrates confidence intervals for the mean. It allows the user to alter sample size, samples taken, intervals, and the option of standard error. The applet displays sample values, such as average, standard deviation, and percent covered.

• ### Dataset Example: Pricing the C's of Diamond Stones

This article describes a dataset containing information on 308 diamond stones, which is useful when studying concepts in multiple linear regression analysis. Key Words: Categorical variables; Data transformation; Standardized residuals.
• ### Concepts of Confidence Intervals

This PowerPoint presentation dicusses general concepts of confidence intervals and interprets confidence intervals for a mean, difference in two means, and the relative risk. The original presenation is available for download.