Statistics - Java Applets, etc.


SCATTERPLOT
http://www.bbc.co.uk/news/uk-19050139
http://nlvm.usu.edu/en/nav/frames_asid_144_g_4_t_5.html

CORRELATION
example
http://bcs.whfreeman.com/ips4e/cat_010/applets/CorrelationRegression.html
quiz
http://istics.net/stat/Correlations/
Anscombe quartet
http://en.wikipedia.org/wiki/Image:Anscombe.svg

REGRESSION
least squares
http://hadm.sph.sc.edu/Courses/J716/demos/LeastSquares/LeastSquaresDemo.html
guess regression line/pearsons r
http://www.ruf.rice.edu/~lane/stat_sim/reg_by_eye/index.html
residuals
http://www.math.csusb.edu/faculty/stanton/probstat/regression.html

DATA SCREENING
normal distribution/central limit theorem
http://www.jcu.edu/math/isep/quincunx/quincunx.html
dice
http://www.stat.ucla.edu/~dinov/courses_students.dir/Applets.dir/DiceApplet.html
bin size, histograms
http://www.stat.sc.edu/~west/javahtml/Histogram.html
outliers
http://www.stat.sc.edu/~west/javahtml/Regression.html
http://bcs.whfreeman.com/ips4e/cat_010/applets/CorrelationRegression.html

1. frequency histograms - are your variables normally distributed?
2. scatterplots - do you see influential outliers
3. correlations - what are the strongest correlations? the weakest?
4. bivariate regression - how much variance is explained by each predictor?
5. multivariate regression - how much variance is explained by the model?