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
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 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
3. Objective evalu
Experiments are conducted to obtain new facts or to confirm or deny results of previous
There are three types of experiments:
1. Preliminary - investigator evaluates a large number of treatments in order to obtain
PlSc 724 - HOMEWORK #4
Given the following set of yield data (Mg/ha) for barley treated with different levels of
Treatment (kg N/ha)
PlSc 724 - HOMEWORK # 5
1. Given the following data set:
Compete the analysis of variance.
Calculate the coefficient of variation.
Calculate the LSD (0.05)
Question 1 SAS Output
The GLM Procedure
Dependent Variable: hddt
Squares Mean Square F Value Pr > F
Corrected Total 101 399.2941176
R-Square Coeff Var Root MSE hddt