On Tue, 27 May 2003, Gayathri Shenoy wrote: > Hi Donald, > > Thank you for your input. > I need to use SAS. > Actually the assignment is data given to us with 3 variables A > (random) B fixed and C random. > We need to make a story to fit the data and perform the analysis of > variance using sas.
You haven't yet answered my question. If you mean to imply that you're supposed to generate SAS code for the analysis, I cannot help you. While I have used SAS, in connection with teaching a course part-time at a nearby university, I do not have a manual at hand, nor am I fluent in the SAS analytical language. > The assignment is in 2 parts. > In the first part there is no nesting and in the second part we take > one of the variables to be nested within another. > > The bread/variety story was something I was trying to fit to the data. Then you might want to be a little clearer about how you have conceptualized the "blocks" factor as days. Days of the week? Number of days used in preparation, as another respondent guessed? Etc. And you should make it clear whether there is only one, or more, observation(s) in each of the (variety by temperature by block) cells. (If the "blocks" were intended to evoke the idea of a randomized blocks design, that would normally imply one case per cell. If you're just making up names for these arbitrary factors, in randomly-generated data, that need not be the case; and then "blocks" may be a misleading name for the factor in question.) And I tend to be unsympathetic to requests for help that do not show what the querent has already attempted and why the attempt(s) be deemed unsuccessful. How do you _think_ you should write the model? You had written: > > > I am working on a paper for school. > > > I have data with 2 factors and 1 block. > > > Factor A (variety of bread) is random with 7 levels, > > > Factor B (temp) is fixed with 4 levels, > > > and there are 5 levels of block (days). > > > Could someone pls help me with the model for this? > > > How do I write the model for this? and I had responded, in part: > >What kind of language are you supposed to use? giving as two examples of a kind of response > > R(VxTxB) with T fixed, V and B random, r=1, v=7, t=4, b=5 and > > y = \mu + \alpha_i + \beta_j + \gamma_k + (\alpha\beta)_ij + ... > > ... + a collection of random error terms, ----------------------------------------------------------------------- Donald F. Burrill [EMAIL PROTECTED] 56 Sebbins Pond Drive, Bedford, NH 03110 (603) 626-0816 . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
