Stat 502
Homework 1
Assigned 10/4/10
Due 10/11/10
1. Bacteria cultures: Biochemists are interested in comparing the amount of bacteria that grow
under two dierent temperature regimes, high and low. In a completely randomized design, 25
plates were assigne
Stat 502
Homework 9
Assigned 12/08/10
Due 12/15/10
Instructions: There are two problems on this exam. Make sure you do everything carefully and completely, and that your answers make sense. You are allowed to consult any book or written material you
wish,
Stat 502
Homework 8
Assigned 11/29/10
Due 12/06/10
Germination: The dataset ag.dat comes from an agricultural experiment carried out in Rothamsted, UK. The factors are high and low levels of water, fertilizer, planting density, and herbicide.
The response
Summaries of sample populations
Hypothesis testing via randomization
Sensitivity to the alternative
Test statistics and randomization distributions
Applied Statistics and Experimental Design
Chapter 2
Peter Ho
Statistics, Biostatistics and the CSSS
Univer
Factorial data
Additive eects model
Randomized complete block designs
Three or more factors
Factorial designs
Applied Statistics and Experimental Design
Chapter 6
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
ANCOVA
Factorial da
Stat 502
Homework 6
Assigned 11/10/10
Due 11/17/10
1. Bees: An entomologist conducted an experiment to understand the eects of temperature
and food source on the energy expenditure of honeybees. Three levels of temperature (20 ,
30 , 40 ) and three levels
Stat 502
Homework 5
Assigned 11/03/10
Due 11/10/10
Instructions: There are three problems on this exam. Make sure you do everything carefully and completely, and that your answers make sense. You are allowed to consult any book or written material you
wis
Stat 502
Homework 7
Assigned 11/18/10
Due 11/29/10
Metabolism: Biologists are interested in the eects of diet and exercise on mouse metabolism.
However, they are also concerned about the dierences between four dierent lab technicians in
how diet and exerc
Stat 502
Homework 4
Assigned 10/25/10
Due 11/01/10
Hospital costs: In a study on dierences in hospital costs, 5 hospitals in each of 7 urban regions
on the West Coast were surveyed on their average costs for a certain type of surgery, so yij =
average cos
Stat 502
Homework 3
Assigned 10/18/10
Due 10/25/10
For problems 1 and 2, write a Data analysis report, having sections with titles given below. Write
in complete sentences, providing the requested tables and plots, but also being as brief as possible.
1.
Stat 502
Homework 2
Assigned 10/11/10
Due 10/18/10
* denotes an optional problem, not to be turned in
1. (Sample size) A researcher needs to estimate the mean circumference of a population of small
trees in the Cascade mountains. The researcher would like
Condence intervals
Power and Sample Size Determination
Condence intervals and power
Applied Statistics and Experimental Design
Chapter 4
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Condence intervals
Power and Sample Size Dete
Split plot designs
Mixed eects modeling
Nested designs
Applied Statistics and Experimental Design
Chapter 7
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Split plot designs
Mixed eects modeling
Potato example:
Sulfur added to so
Treatment variation
Sums of squares
Introduction to ANOVA
Applied Statistics and Experimental Design
Chapter 5
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Normal sampling models
Treatment variation
Sums of squares
Normal sampl
Model diagnostics
Treatment Comparisons
Practical Considerations for ANOVA
Applied Statistics and Experimental Design
Chapter 5
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Multiple comparisons
Model diagnostics
Treatment Compa
Population models
The t-test
Two sample tests
Inference based on population models
Applied Statistics and Experimental Design
Chapter 3
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Checking assumptions
Population models
The t-t
Induction
Model of a process or system
Principles of Experimental Design
Applied Statistics and Experimental Design
Chapter 1
Peter Ho
Statistics, Biostatistics and the CSSS
University of Washington
Experiments and observational studies
Induction
Model of