On this page, most links lead directly to applets. If the link leads to discussion instead of an applet, then the text says discussion. Most applets begin with some values in so that you see what the applet does right away. Some of the applets allow you to enter your own data. (By copy and paste mostly, I expect. Don't spend time typing in data here  there are for quick overviews of concepts.)
If an applet is not completely selfexplanatory, or if you want something with more depth, click on the Instructions/Discussion link at the bottom of the applet. There are MANY more applets in this collection than are linked to from this top page. You'll have to find those extra applets from the Discussion pages.
This is a work in progress and not all the topics identified have applets or illustrations available now. Your textbook has many illustrations as well, so we felt it was useful to make this Table of Contents address many things that it is helpful to visualize rather than limit it to those for which we have completed applets.
For the material toward the end of this table, we don't have applets yet. However the tables are organized to help you see the similarities between the techniques. For those chapters, much of what you should visualize is the table itself and what it is telling you about how to understand the new material in terms of previous material you have learned.
Basic Practice of Statistics 7th edition 

Topics and relationships to visualize 
Use these applets on your own data.  
Data 
Data and values to use in these applets  
Chapter1 
Frequency graphs of onevariable data


Chapter 1 
Other graphs of onevariable data


Chapter 2 
Summary statistics of onevariable data 

Chapter 2 
Comparative graphs of onevariable data 

Chapter 3 
Graphs of population data


Chapter 3 and 20, 21 
Samples from populations

histograms
of
samples (You can't enter population data here, but you can choose from three different populations.) 

Chapters 4, 5 and 26 
Relationships between two quantitative variables


Chapters 6 and 25 
Relationships between two (or three) categorical
variables 

Chapter 9 
Experimental Design


Chapter 12 
Probability

Probabillity as a longterm relative frequency (You can't enter data here  you can enter the probability of an event and the simulate MANY occurances of the event to see the pattern of the relative frequency.) 

Chapter 15 and 22

Sampling Distributions of various statistics


Chapter 16 and 20 Chapter 22 
Estimation of one parameter (mean or proportion) with confidence intervals
Standard Error calculators (including SE for one proportion) 
Put in sample mean, etc. 

Chapter 17, 20, and 22

Hypothesis testing of a claim on one variable (mean or
proportion)
Standard Error calculators (including
SE for one proportion) 


Chapters 21 and 23 
Inference on difference of two parameters (means or proportions)Standard Error calculators (including
SE for one proportion, difference of two means, difference
of two proportions) Matched Pairs. The statistical
method is to find the difference for each pair, and then
analyze the set of differences as a onevariable problem.
This applet takes the matched pairs data as
input and finds the entire set of differences and
the mean and standard deviation of those
differences.


Chapter 25 and 27. Extension of ideas from Chapters 23 and 21. 
Inference on comparing multiple (two or more) parameters (proportions or means)


Chapter 26. Uses concepts and techniques from Chapters 4 and 5 
Inference on relationships between two (or more) quantitative variables (regression)This table shows what is covered in this chapter.
Material covered in Chapters 4 and
5

Information about entering data for our applets
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