Unformatted text preview: and Principal Axis 2. NOTE: In R using cmdscale() Mardia’s a 1 goodness of fit statistic is hidden in $GOF. It is the first of the two numbers there. 2) Now do a nonmetric multidimensional scaling on the same distance matrix as in question 1. a) Present a STRESS diagram. How many dimensions would you choose if you were allowed more than two (i.e. not in an assignment)? b) Present a 2 dimensional solution reduced space plot with site identified. What is the STRESS for this 2 D solution? How good is the reduced space plot? c) Compare the reduced space plots from question 1 and question 2 and comment on the similarities between these two reduced space plots and that from a PCA on the same data. d) Identify which variables are associated with the Principal Axes you chose....
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This note was uploaded on 09/24/2009 for the course STATS 731 taught by Professor Renate during the Spring '09 term at Auckland.
- Spring '09