Regression >> Illustrate how correlation and/or regression statistics are affected by points, outliers, range of X

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APPLETSOURCEDESCRIPTION
The Effects of OutliersIlluminations, Resources for Teaching MathUsers plot points on scatterplot and then place outliers to see the effect on the regression line.  more
Restricted RangeRice Virtual Lab in Statistics (Lane)Users can choose one or several examples or enter data and then choose to eliminate points, shows correlation for both original and restricted data.  more
Correlation/Regression Interactive Java AppletPilant and HallComputes correlation coefficient as users place and move points.  more
ScatterplotsSticiGui (Stark)Shows scatterplot and regression line or residual plots, averages, standard deviations, and univariate statistics for one of several examples that user can add points to or a user-entered data set.  more
RangeRestrictSeeing Statistics (McClelland) in Fundamental Statistics for the Behavioral Sciences (Howell)For randomly generated data sets, allows user to restrict values of either X or Y and observe changes in correlation.  more
Heterogeneous SubsamplesSeeing Statistics (McClelland) in Fundamental Statistics for the Behavioral Sciences (Howell)Illustrates how regression or correlation analyses with heterogenous groups can be misleading.  more
Correlation & RegressionSchneiterShows effects on the scatterplot, r value and regression line as users manipulate one of three sample data sets by either adding a constant to x and/or y, multiplying x and/or y by a constant, or switching x and y.  more