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- Sampling Distribution
of the Mean
- This applet teaches fundamental properties of sampling
distributions of means such as accuracy of sample means,
probability, and effects of sample size.
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- - SDM
Applet
demonstration guide
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- p-z Converter
- This applet converts
probability values to z values and vice
versa. The simple version converts only right-tail
p and z values. The graphic version allows the user to input left-tail p,
raw scores, and the mean and standard deviation of
the group of interest.
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- Hypothesis Testing Applet
- This applet serves to introduce the logic of hypothesis testing
using z-scores.
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- Statistical
Power
- This applet introduces the concept of
power and the relationship between power and effect size, alpha, and
sample size.
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- - Power Applet
demonstration guide
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- Confidence Interval Overlap
- This applet demonstrates how t-test p values are related to amount of overlap
of confidence intervals.
- - Confidence Interval Overlap
demonstration guide
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- Confidence Interval Creation
- This applet illustrates how demonstrate how the population distribution
and sample size influence confidence intervals.
- - Confidence Interval Creation
demonstration guide
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- Correlation and
Regression
- This applet demonstrates how the sum of squared
deviations is affected by the fit of the regression
line to data points.
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- Signal Detection Theory
- SDT is a statistical theory of decision making which summarizes
a person's ability to discriminate between different classes of
items based upon their correct decisions (Hits) versus their Errors
(False Alarams). The applet also plots the Receiver-Operating
Characteristics.
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- Classification, Utility, and
Decision Making
- An applet which assists in determining group membership based
upon test performance, utility of correct and incorrect
classification, and population base rates.
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- Bootstrapping
- This applet can be used to help visualize the resampling method of bootstrapping.
"Resamples" from an original sample can be taken one at a time, or 10,000 at once,
ultimately providing a 95% confidence interval for the population mean or median.
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- Confidence Interval Game
- This applet was designed to provide a fun method to learn about p
values. Challenge yourself and see how well your estimates match with the real value.
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