dof - E P+L = TMC Pure P 1 d.o.f for every datapoint that...

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MIT OpenCourseWare http://ocw.mit.edu 2.830J / 6.780J / ESD.63J Control of Manufacturing Processes (SMA 6303) Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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Degrees of Freedom summary For use in ANOVA during model fitting/testing Type Symbol Description Value taken Notes Constant 1 or 0 if supplied data are not centered about the mean if supplied data are centered about the mean Model M Model 1 per parameter included in the model Curvature C 1 or 0 if test of curvature is done* if test not done
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Unformatted text preview: E P+L = TMC Pure P 1 d.o.f for every datapoint that replicates an already existing combination of input values (see, e.g., Lecture 15 slides 14 and 15). For example, if there are five values for the centerpoint, and that is the only location replicated, P would be 51 = 4. Error Lack-of-fit L L = TCMP Total T N or N1 if supplied N data are not centered about the mean if supplied N data are centered about the mean * The example in Lecture 13 slide 39 was wrong to assign 3 d.o.f. to the quadratic SS....
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This note was uploaded on 09/24/2010 for the course MECHE 2.830J taught by Professor Davidhardt during the Spring '08 term at MIT.

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dof - E P+L = TMC Pure P 1 d.o.f for every datapoint that...

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