Web Pointer 15.1 Correlation and regression: Interactive simulations and further information

Description

URL in book

Last updated

Provides a detailed but understandable description of the purpose and computation of correlation and regression statistics

http://faculty.vassar.edu/
~lowry/webtext.html

An excellent and easy to use online calculator to compute correlation and regression statistics.  Requires import ar direct entry of data.  Useful to experiment with

http://members.aol.com/johnp71/
javastat.html#Regression

An excellent regression simulator.  You place the points on a scatterplot and see the effect on the slope of the regression line and the B co-efficient.  Experiment with ‘outliers

http://www.math.csusb.edu/faculty/
stanton/m262/regress/regress.html

Another excellent interactive regression and correlation simulator.  Place data points on a scatterplot and examine the effect on the regression line (slope) and the correlation coefficient.  Can also set a correlation coefficient and generate points and line for that coefficient

http://www.stat.uiuc.edu/~stat100/
java/guess/PPApplet.html

A simple interactive regression simulator designed to illustrate the effect of outliers on a regression line

http://www.stat.sc.edu/~west/
javahtml/Regression.html

Provides animated demonstrations of relationships between data points, slope correlation, standard error etc

http://www.ruf.rice.edu/~lane/
stat_sim/comp_r/index.html

Clear discussion and explanation of Pearson’s r and its computation.  Explains confidence interval for r and other useful information

http://davidmlane.com/hyperstat/
A34739.html

A series of interactive programs.  The regression simulation allows you to see what happens when you plot a line for any number of samples.

http://www.kuleuven.ac.be/ucs/
java/index.htm

Using real data sets this interactive program enables you to see the effect of adding data points, outliers et

http://www.stat.berkeley.edu/
users/stark/Java/ScatterPlot.htm

Probably the best simulator for showing the relationship between correlation and regression.  Shows relationship between scatter and correlation

http://www.stat.berkeley.edu/
users/stark/Java/Correlation.htm

A good exercise that asks you to say which correlation fits which scatterplot.  Tests understanding of relationship between nature of scatter and correlation

http://www.stat.uiuc.edu/
~stat100/java/guess/GCApplet.html

Creates a scatter plot and regression line and compute basic correlation and regression statistics. Data may be entered from the keyboard, mouse or using pre-loaded datasets.

http://www.ctc.edu/~tkaupe/
211/java/correlate/correlate.htm

Explores correlation in a simple question and answer format and goes beyond that that is possible in this book.  Accessible, shows how to use SPSS for correlations and discusses the assumptions that should be met for doing correlation and regression

http://www2.chass.ncsu.edu/
garson/pa765/correl.htm

Simple and useful discussion of statistical significance in relation to correlations.  Discusses links between sample size, correlation strength and statistical significance

http://www.statsoft.com/
textbook/stathome.html

Very good discussion of correlation and regression that includes a series of interactive, online applications for demonstrating and simultating points being made in the discussion

http://espse.ed.psu.edu/statistics/
Chapters/Chapter13/Chap13.html

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Do you know of more good links on this topic?  Email me and I will add them

Web Pointer 15.2: Confidence interval calculators for Pearson’s r

Description

URL in book

Last updated

Simple on line confidence interval calculator for Pearson’s correlation

http://glass.ed.asu.edu/
stats/analysis/rci.html  OR

http://ebook.stat.ucla.edu/
textbook/bivariables/correlation/
rci.html

A spreadsheet based calculator for calculating confidence intervals for Pearson’s r and for a range of other statistics

http://www.sportsci.org/resource/stats/
xcl.xls

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