pracex2S424

# pracex2S424 - 2 , the variance of a single observation. (b)...

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1 Practice Exam 2 Statistics 424 1 Given the two replicates in an experiment where Factor A has 2 levels and Factor B has 3 levels Factor A Factor B Rep. 1 Rep. 2 1 1 19 25 1 2 5 7 1 3 4 12 2 1 5 3 2 2 17 15 2 3 6 14 (a) Find the sums of squares residual or error. (b) Plot the relevant means as an interaction plot. (c) Conduct the F-test for the presence of interaction using α = . 05. 2 Three replicates of a 2 3 experiment where performed where the three factors are labeled A B and C. A B C Rep. 1 Rep. 2 Rep 3 - 1 -1 - 1 3 5 4 1 - 1 - 1 6 4 2 - 1 1 - 1 11 9 10 1 1 - 1 12 15 15 - 1 - 1 1 10 10 13 1 -1 1 13 11 12 - 1 1 1 16 18 17 1 1 1 20 24 22 (a) Find the estimate of
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Unformatted text preview: 2 , the variance of a single observation. (b) Plot the relevant means on a cube. (c) Estimate the eects. Use 2 standard errors to decide which eects are non-zero. (d) Summarize your ndings. 3 Refer to Problem 2. Explain 3 dierent ways to calculate the main eect of Factor A in the previous problem. ( you dont need to carry out the calcula-tions). 4 Refer to Problem 2. Use Yates algorithm to nd the estimated eects....
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## This note was uploaded on 05/15/2008 for the course STAT 424 taught by Professor Peter during the Fall '08 term at Wisconsin.

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