**This page was initially
created in May 2000 by BB&N AP Statistics student Nick Reber
('02). An equal amount of work was done by Andrew Warner ('04)
in May 2002. Evaluations are their own and are not edited by BB&N.**

__Rice University Virtual Lab in Statistics__

A large selection of applets, covering most AP Statistics topics. Some of these applets are very basic, but many are complex and sometimes confusing.

__University of South Carolina Statistics Department__

This site contains a wide variety of applets. Some of these applets resemble games while others are more complex.

__Russ Lenth's Power and Sample Size Page__

This site contains 7 applets relating to Power and Sample Sizes, including applets for various tests.

__UAH Mathematical Sciences Applets Page__

This page contains a wide variety of applets, some of which are contained in the AP statistics course, and some of which are not.

**Statlab - Laboratory for Statistics**

This site contains a large amount of applets including applets for the geometrical distribution, descriptive statistics, special distributions, and goodness of fit. Some of these applets are based on games, or explain how games work.

**Econ 222 Homepage for Statistics
- Applets**

This is a page that includes applets dealing with different types of distributions.

**Todd Ogden, Professor at USC, Homepage for Statistics**

This is the home page of a professor of statistics from the University of South Carolina. This site contains a few useful applets.

**Effect of Bin Width on Interpretting Histograms. **This applet shows the influence the number of bins on an Old Faithful duration data set.

From West Applets

** Mean and Median**
This is a simple but very useful
applet that lets you draw a distribution and then calculates the
mean, median and standard deviation.

**Chi-Squared Distribution** This
applet shows the Chi-Sq distribution for a given degrees of freedom.
It also allows you to set a value and find the probability that
a random value X is less than this given value for the degrees
of freedom given.

From Econ 222 Homepage for Statistics - Applets

**Binomial Distribution Applet** This simple applet shows the binomial distribution
for a given n and p. The blue line indicates the expected count,
while the red area gives the expected interval

From Econ 222 Homepage for Statistics - Applets

**Binomial Applet** this
simple applet allows you to toss a certain number of coins and
see the expected distribution. It also allows you to take many
samples to see how the distribution eventually settles to the
expected distribution.

From UAH Mathematical Science and Applets Page

** Sampling Distribution** This applet lets you choose a parent population
(normal, uniform, skewed or custom) and for different sample sizes
shows a resulting sampling distribution. This is a good applet,
except the graphics are a little too small to see the fine differences
in distribution shapes.

** Dice
CLT** This applet simulates rolling
dice (you can choose 1-5 dice) repeatedly and recording the sum
of the dies. As the number of dice increases, the sampling distribution
gets more normal.

From University of South Carolina Applets.

**Multiple Dice CLT **This
applet lets you roll 1, 3,6 or 9 dice repeatedly and then shows
the sampling distribution. It is clearer than the "Dice CLT"
but does not re-scale the sampling distribution and perhaps not
quite as useful.

From Chuck Stanton's Home Page.

** Falling balls into a Normal Distribution** This is a very clever and interesting applet that has balls fall through a field of blocks. The balls collect at the bottom of the screen, as it turns out, in a normal distribution. This applet is not as much useful as it is a creative way of looking at a normal distribution.

From U of T Day Statistics Applets.

**CI
for sample mean** click on this applet
in the box on the left and click "run applet". This
applet allows you to change the components of the confidence interval
for a sample mean to find out how that would affect the interval.

From Russ Lenth's Power and Sample Size Page

**CI
for one Proportion** click on this
applet in the box on the left and click "run applet".
This applet allows you to change the components of the confidence
interval for one proportion to find out how that would affect
the interval

From Russ Lenth's Power and Sample Size Page

**Confidence
Intervals** In this applet, samples
are drawn from a population. Then confidence intervals are created
from these samples. The overall proportion of 95% and 99% confidence
intervals that contain the population mean is tabulated. This
is a useful applet, but, it does not calculate the confidence
intervals in front of you, so you cannot directly see where they
came from.

**Confidence Interval for a Proportion** This applet lets you explore the validity of confidence intervals by varying the sample size and the population proportion. After choosing both an "n" and a "p" you simulate many samples. The applet returns the proportion of 95% confidence intervals that actually contained the population proportion.

**Confidence Interval for Means** This is a great applet that samples many sets
of data and plots the population mean, the data and the confidence
interval all on the same graph.

From Chuck Stanton's Home Page.

** Influential Points**
This applet provides a data set and resulting regression line
and then lets you add another point and compare the new regression,
including the added point, to the old one. Using this applet,
it is clear which points are influential to a linear model.

From University of South Carolina Applets.

**Regression by Adding Points** This
applet lets you plot points by clicking with your mouse and then
calculates the linear regression line and the residual plot.

From Chuck Stanton's Home Page.

**One
proportion test** click on this applet
in the box on the left and click "run applet". This
is a simple applet that allows you to see the effect of changing
the components of a one proportion test to see how that would
affect the p-value of the test.

From Russ Lenth's Power and Sample Size Page

**Two
proportion test** click on this applet
in the box on the left and click "run applet". This
is a simple applet that allows you to see the effect of changing
the components of a two proportion test to see how that would
affect the p-value of the test.

From Russ Lenth's power and Sample Size Page

**One
sample t test**** **click on this
applet in the box on the left and click "run applet".
This is a simple applet that allows you to see the effect of changing
the components of a one sample t test to see how that would affect
the p-value of the test.

From Russ Lenth's Power and Sample Size Page

**Two
sample t test**** **click on this
applet in the box on the left and click "run applet".
This is a simple applet that allows you to see the effect of changing
the components of a two sample t test to see how that would affect
the p-value of the test.

From Russ Lenth's Power and Sample Size Page

**Venn Diagram Applet**** **This
applet displays what areas of a Venn diagram for two different
not-mutually exclusive events, and shades the areas corresponding
to the conditions that you set.

From UAH Mathematical Sciences and Applets Page

**Dice Experiment Applet** This
applet allows you to simulate the rolling of up to 20 dice, and
gives an expected distribution and shows how the data eventually
fits this data. The probability of getting a single number on
the die (i.e. a 1) can be adjusted as well. The graph can be adjusted
to display different aspects of the dice rolling.

From UAH Mathematical Sciences and Applets Page

**Power Applet** This
simple applet allows you to compute power for a given True Mean,
Hypothesized mean, sigma, and N. (you must input these parameters
in the given text boxes before the graph will appear!)