multi variate question (DOE)!
multi variate question (DOE)!
(OP)
Hi!
I received a large quantity of data from one of my students.
The variables (factors) are the final concentration in a bulk solution.
Components A or B are mixed with different ratios of x or y or z...
Water is also used 0 or 0,1%
A and B are present at 0,4 or 0,8 % when added into the bulk solution.
X, y or z is present in 0,4 or 0,8 % in the final bulk solution when added to A or B in the lower conc. and 0,8 or 1,6% when added to the high conc. of A or B.
That makes 48 experiments (+4 repetitive experiments for standard deviation).
Only one response is measured in these experiments (a quality factor 0-100)
I’m familiar with “design of experiments” programs but this time the experiments are already carried out and I don’t know who to get the different components contribution to the results?
Could you give me some ideas how to sent up this program or links to similar problems?
Maybe I can’t use multivariate analysis for this problem?
Looking forward to your responses
I received a large quantity of data from one of my students.
The variables (factors) are the final concentration in a bulk solution.
Components A or B are mixed with different ratios of x or y or z...
Water is also used 0 or 0,1%
A and B are present at 0,4 or 0,8 % when added into the bulk solution.
X, y or z is present in 0,4 or 0,8 % in the final bulk solution when added to A or B in the lower conc. and 0,8 or 1,6% when added to the high conc. of A or B.
That makes 48 experiments (+4 repetitive experiments for standard deviation).
Only one response is measured in these experiments (a quality factor 0-100)
I’m familiar with “design of experiments” programs but this time the experiments are already carried out and I don’t know who to get the different components contribution to the results?
Could you give me some ideas how to sent up this program or links to similar problems?
Maybe I can’t use multivariate analysis for this problem?
Looking forward to your responses





RE: multi variate question (DOE)!
You may not be able to easily figure out the level of confounding in the higher order interactions, but that is also possible.
The key for analysing them is writing the the experiment out in a rational fashion.
You can use Minitab or Excel to analyse this.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: multi variate question (DOE)!
m777182
RE: multi variate question (DOE)!
To be honest this stuff is harder to write about in text than to do in a test-matrix.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.