Question 1 SAS Output
The GLM Procedure
Dependent Variable: hddt
Source
DF
Sum of
Squares Mean Square F Value Pr > F
Model
37 342.5901839
9.2591942
Error
64
0.8859990
56.7039337
10.45 <.0001
Corrected Total 101 399.2941176
R-Square Coeff Var Root MSE hddt
PlSc 724 - HOMEWORK #3
The following two problems were adapted from the text Principals and Procedures of Statistics A Biometrical Approach: 3rd Edition. 1997. R.G.D. Steel, J.H. Torrie, and D.A. Dickey.
In order to keep the answers consistent, use three
PlSc 724 Homework #1
Answer the following questions adapted from the text: Principals and Procedures of Statistics A Biometrical Approach: 3rd Edition. 1997. R.G.D. Steel, J.H. Torrie, and D.A. Dickey.
To facilitate grading of assignments, please write on
PlSc 724 Homework #2
Questions are adapted from the text: Principals and Procedures of Statistics - A
Biometrical Approach: 3rd Edition. 1997. R.G.D. Steel, J.H. Torrie, and D.A. Dickey.
1. Yields of 10 strawberry plants in a uniformity trial are given by
MEAN SEPARATION TESTS (LSD AND Tukeys Procedure)
If H o = 1 = 2 = . n is rejected, we need a method to determine which means are
significantly different from the others.
Well look at three separation tests during the semester:
1. F-protected least signifi
STATISTICS REVIEW
Statistics and the Scientific Method
In general, the scientific method includes:
1. A review of facts, theories, and proposals,
2. Formulation of a logical hypothesis that can be evaluated by experimental
methods, and
3. Objective evalu
PLANNING EXPERIMENTS
Experiments are conducted to obtain new facts or to confirm or deny results of previous
experiments.
There are three types of experiments:
1. Preliminary - investigator evaluates a large number of treatments in order to obtain
leads f
PlSc 724 - HOMEWORK #4
1.
Given the following set of yield data (Mg/ha) for barley treated with different levels of
nitrogen fertilizer:
Treatment (kg N/ha)
0
100
150
Replicate
Sam
50
Replicate
Replicate
Replicate
1
2
3
1
2
3
1
2
3
1
2
3
1
2.3
1.3
1.7
3.9
PlSc 724 - HOMEWORK # 5
1. Given the following data set:
Treatment
Replicate
1
2
3
4
5
6
1
43
52
37
26
77
83
2
52
67
42
17
92
56
3
34
41
21
9
77
67
a.
Compete the analysis of variance.
b.
Calculate the coefficient of variation.
c.
Calculate the LSD (0.05)
RANDOMIZED COMPLETE BLOCK DESIGN (RCBD)
Description of the Design
Probably the most used and useful of the experimental designs.
Takes advantage of grouping similar experimental units into blocks or replicates.
The blocks of experimental units should be a