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high1
2006 Feb 16
0
factors and contrast matrix
...ficult question to answer, but I need all the help I can
get.
1. how does one suppose to build the design matrix by knowing what one wants
to examine? this is the created matrix in the book:
Intercept ES T48 ES:T48
low10-1.cel 1 0 0 0
low10-2.cel 1 0 0 0
high10-1.cel 1 1 0 0
high10-2.cel 1 1 0 0
low48-1.cel 1 0 1 0
low48-2.cel 1 0 1 0
high48-1.cel 1 1 1 1
high48-2.cel 1 1 1 1
attr(,"assign")
[1] 0 1 2 3
attr(,"contrasts")
attr(,"contrasts&q...