To whom it may concern:
I am trying a factorial design a system of mine that has two factors.
Each factor was set at four different levels, with one replication for
each of the combinations. My data is as follows:
A B Response
16002.5
On 8/18/06, Correia, L, Mr [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
To whom it may concern:
I am trying a factorial design a system of mine that has two factors.
Each factor was set at four different levels, with one replication for
each of the combinations. My data is as follows:
If you really want the quadratic terms, you need to keep those variables as
numeric, instead of factors. (You might also want to look into something
like the central composite designs.)
summary() and coef() on the resulting fitted object should give you want you
need. Things like these are
