how to insert supplementary points in Correspondence Analysis

gianmarco

TS Contributor
#1
Dear All,
I have a problem in performing Correspondence Analysis, and Mintab's help does not help so much.

I have the attached contingency table, and I would like to perform CA, adding the last two rows (coloured in green) as supplementary row profiles.

I do not understand how to fit those rows into the Minitab menù options.


Any suggestions?

Thanks
Regards,
Gm
 

terzi

TS Contributor
#2
Which version of MINITAB are you using? I'm positive that there's a button for supplementary data in MINITAB 15, that allow you to enter both supplementary rows or columns.
 

gianmarco

TS Contributor
#3
Hi Terzi,

sorry for not replying to you, but I have been out for work and no internet connection.

Thanks for your reply.

I am using minitab 15 and I did not manage to grasp how to insert supplementary points. I managed to do the same thing in Statistica.


Thank you anyway,
regards
Gm
 

terzi

TS Contributor
#4
Hi again,

It is odd, since there is an option available for that. I would suggest using as input the contingency table from your data, that is, create the table and then introduce it, that way it is easier (at least for me:p) to understand how the program handles the supplementary points.

I attach a snapshot from a Minitab 15 I found (I don't have it). It's a spanish version, but you can see that an option for supplementary data is just there. This windows is accessed through Statistics>>Multivariate Analysis>> Simple Correspondence Analysis. If you had troubles, try pressing the help button, and the example that is included uses a supplementary row.

If that option is not available, please attach a snapshot since it may be a problem with the installation or something.