# Simulation

• ### Poisson Distribution Calculator

This page calculates probabilities for a Poisson distribution.

• ### Confronting Some Statistical Inference Misconceptions

This lesson poses a series of questions designed to challenge students' possible misconceptions of statistical inference and hypothesis testing. The lesson uses the statistical software, Fathom, and three datasets with information on the number of chips per canister distributed by a snack maker. The data can found at the relation address below.
• ### Intuitive Biostatistics: Choosing a Statistical Test

This page provides a table for selecting an appropriate statistical method based on type of data and what information is desired from the data. It also compares parametric and nonparametric tests, one-sided and two-sided p-values, paired and unpaired tests, Fisher's test and the Chi-square test, and regression and correlation. It comes from Chapter 37 of the textbook, "Intuitive Biostatistics".
• ### IDEAL: Probability Definitions

This module discusses the probability of an event and relative frequency. The applet shows how empirical probability converges to theoretical probability as the sample size increases. The follow-up example includes an applet that simulates drawing differently colored balls from an urn.
• ### Data Collection: Datasets from Drug Research

This collection of datasets comes from several phases of drug research. Each dataset comes with a full description and questions to answer from the data.
• ### Quote: Lorenz on Hypotheses

It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young. A quote of Austrian animal behaviorist Konrad Lorenz (1903 - 1989) in "On Aggression", (English translation: 1966, Harvest books) p. 12. Quote also found in "Statistically Speaking - a Dictionary of Quotations" compiled by Carl Gaither and Alma Cavazos-Gaither p. 119.
• ### Quote: Hoyle on Outliers

I don't see the logic of rejecting data just because they seem incredible. A quote of British Astronomer Sir Fred Hoyle (1915 - 2001) found in "Statistically Speaking - A Dictionary of Quotations" compiled by Carl Gaither and Alma Cavazos-Gaither (IOP publishing, 1996) p. 150.
• ### Quote: Karlin on Models

The purpose of models is not to fit the data but to sharpen the questions. A quote of applied probabilist Samuel Karlin (1924 - 2007) from his Fisher memorial lecture April, 1983. The quote is found in "Statistically Speaking: a Dictionary of Quotations" compiled by Carl Gaither and Alma Cavazos-Gaither.
• ### Quote: Pearl on Summary Statistics

Descriptive Statistics are like Real Estate plus. They are all about location, location, location ... plus variation, variation, variation. quote from Dennis Pearl (1951 - )

• ### Quote: Fiedler on Forecasting

Forecasting is very difficult, especially about the future. A quote of business economist Edgar R. Fiedler (1929 - 2003) found in "Across the Board", the magazine of The Conference Board, Inc. (June, 1977). The quote also appears in "Statistically Speaking: A dictionary of quotations" compiled by Carl Gaither and Alma Cavazos-Gaither.