Teaching:TUW - UE InfoVis WS 2008/09 - Gruppe 02 - Aufgabe 1 - Scatterplot: Difference between revisions

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=Scatterplot=
A scatterplot (also called a ''scatter chart'', ''scatter diagram'' or ''scatter graph'' [Wikipedia]) is a diagram in which the values of two variables are applied to the horizontal and vertical axes of a cartesian coordinate system. The resulting point in the graph represents one record from a data set. The distribution pattern of points from multiple records reveal the correlation between the selected variables in the data set. The scatterplot is not to be confused with the ''correlation plot'' [Information Technology Lab, NIST #2] which treats already adopted correlation coefficients, while the term ''correlation diagram'' does not seem to be bound.


A scatterplot (also called a ''scatter chart'', ''scatter diagram'' and ''scatter graph''[Wikipedia]) is a diagram in which the values of two variables are applied to the horizontal and vertical axes of a cartesian coordinate system. The resulting point in the graph represents one record from a data set. The distribution pattern of points from multiple records reveal the correlation between the selected variables in the data set. The scatterplot is not to be confused with the ''correlation plot'' (http://www.itl.nist.gov/div898/handbook/eda/section3/linecorr.htm) or ''correlation diagram'' which treat already determined correlation coefficients.
=Revealed Information=


Revealed Information
correlation patterns -> type of correlation
(regression line, regression "path", "scatterplot smoothing" [NetMBA])


outlyers
density & outlyers


=Scatterplots of higher dimensions=


Not necessarily two variables, higher dimensions displayed spacially or by point properties (color, size, shape)


correlation patterns
=Treating Discrete Data=


regression line
[Wikipedia, DE]


=References=


 
*Wikipedia, EN: http://en.wikipedia.org/wiki/Scatterplot
 
*Wikipedia, DE: http://de.wikipedia.org/wiki/Streudiagramm
 
 
*Wikipedia: http://en.wikipedia.org/wiki/Scatterplot
*University of Illinois: http://www.mste.uiuc.edu/courses/ci330ms/youtsey/scatterinfo.html
*University of Illinois: http://www.mste.uiuc.edu/courses/ci330ms/youtsey/scatterinfo.html
*Information Technology Lab, NIST: http://www.itl.nist.gov/div898/handbook/eda/section3/eda33q.htm
*Information Technology Lab, NIST #1: http://www.itl.nist.gov/div898/handbook/eda/section3/eda33q.htm
*Information Technology Lab, NIST #2: http://www.itl.nist.gov/div898/handbook/eda/section3/linecorr.htm
*NetMBA: http://www.netmba.com/statistics/plot/scatter/
*NetMBA: http://www.netmba.com/statistics/plot/scatter/
*ChartItNow: http://www.chartitnow.com/scatter%20diagram.html
*ChartItNow: http://www.chartitnow.com/scatter%20diagram.html

Revision as of 18:07, 30 October 2008

A scatterplot (also called a scatter chart, scatter diagram or scatter graph [Wikipedia]) is a diagram in which the values of two variables are applied to the horizontal and vertical axes of a cartesian coordinate system. The resulting point in the graph represents one record from a data set. The distribution pattern of points from multiple records reveal the correlation between the selected variables in the data set. The scatterplot is not to be confused with the correlation plot [Information Technology Lab, NIST #2] which treats already adopted correlation coefficients, while the term correlation diagram does not seem to be bound.

Revealed Information

correlation patterns -> type of correlation (regression line, regression "path", "scatterplot smoothing" [NetMBA])

density & outlyers

Scatterplots of higher dimensions

Not necessarily two variables, higher dimensions displayed spacially or by point properties (color, size, shape)

Treating Discrete Data

[Wikipedia, DE]

References

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