I'am a student of Educational Universiti of Indonesia.
I take "Internal Stabiliti in Correespondence Analysis of Normal Distributerd
Data" for my final task.
I've had problem with ellipse contructing as STATISTICA 6.0 generate in
Correspondence Analysis Session.
I thing the ellipse in bivariate normal distribution can be applied in the plot
of correspondence analysis.
The ellipse is
t(X-Xbar)(inverse(Sigma))(X-Xbar)<= chi-square(alfa,2)
and the probability is
P[t(X-Xbar)(inverse(Sigma))(X-Xbar)<= chi-square(alfa,2)]=1-alfa
The point outside the ellipse become supplementary points as the point outside
the ellipse in the bivariate normal is outlier.
If i construct the ellipse from the row and column coordinates like
t(F-Fbar)(inverse(Sigma(F)))(F-Fbar)<= chi-square(alfa,2),
wheter the ellipse valid? (for detecting outlier data)
How can i create the valid ellipse ?
Please Help Me.
Thanks to you all......
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