quiz05.sp01

quiz05.sp01 - Quiz 5, St 512, Spring 2001 Dickey For any...

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Sheet1 Page 1 Quiz 5, St 512, Spring 2001 Dickey For any models with random effects, assume the summing to 0 restrictions as was done in the book, notes, and lecture. Question 1. Here is a table of all 12 observations from an experiment with factorial treatments in a completely randomized design. The factors are L=Lake from which water was taken and T=Type of fish. Each factor is at two levels and as you see, there are 3 replicates. The numbers are measurements of growth from 12 fish in centimeters, each grown in a separate tank with water from one of the two lakes. T 1 2 L 1 12, 18, 15 15, 22, 23 105 2 18, 22, 26 20, 23, 20 129 111 123 (24 pts.) Fill in the blanks in this analysis of variance table. Source df Sum of Squares L ___ ___________ T ___ ___________ LT ___ ___________ error ___ ___________ (18 pts.) Assuming all fixed effects, (a) Compute the difference of the two T means ______ (b) Compute the standard error of this difference __________ (c) Explain one computation you might do next, that is, why would someone want to know this standard error? (9 pts.)

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This note was uploaded on 08/01/2008 for the course ST 512 taught by Professor Dickey during the Summer '07 term at N.C. State.

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quiz05.sp01 - Quiz 5, St 512, Spring 2001 Dickey For any...

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