hw8sol - STAT 4220 HW8 Solution 1 Problem 1 (a) The main...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: STAT 4220 HW8 Solution 1 Problem 1 (a) The main effects are calculated as follows: ME ( OT ) = 1 4 ( 59 + 90 + 52 + 87 )- 1 4 ( 67 + 79 + 61 + 75 ) = 1 . 5 ME ( PC ) = 1 4 (- 67- 79 + 61 + 75- 59- 90 + 52 + 87 ) =- 5 ME ( ST ) = 1 4 (- 67 + 79- 61 + 75- 59 + 90- 52 + 87 ) = 23 (b) INT ( OT , ST ) = 1 4 ( 67- 79 + 61- 75- 59 + 90- 52 + 87 ) = 10 (c) INT ( OT , PC , ST ) = 1 4 (- 67 + 79 + 61- 75 + 59- 90- 52 + 87 ) = . 5 (d) The calculated effects in R agree with the hand calculations: > eff OT CP ST OT:CP OT:ST 1.500000e+00 -5.000000e+00 2.300000e+01 -4.115237e-15 1.000000e+01 CP:ST OT:CP:ST 1.500000e+00 5.000000e-01 1 (e) Using Method 1 generates the following plot:-1 1 OT 55 60 65 70 75 80 85 90 55 60 65 70 75 80 85 90 55 60 65 70 75 80 85 90-1 1-1 1 CP-1 1-1 1 ST-1 1 Interaction plot matrix for y (f) From the half-normal plot, we declare the ST main effect, and the OT ST interaction, and CP main effect to be significant....
View Full Document

This note was uploaded on 06/06/2011 for the course STAT 4220 taught by Professor Smith during the Spring '08 term at University of Georgia Athens.

Page1 / 6

hw8sol - STAT 4220 HW8 Solution 1 Problem 1 (a) The main...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online