Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Spring 2013
Exam 1
You may mark out up to five (5) questions which you dont want to be graded on,
excluding those marked MUST ANSWER.
(4) 1. You are speaking with a relative who does not "kn
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Statistical Methods for Environmental Scientists and Managers
Tuesday and Thursday 4:305:45PM, 203 Green Hall
Wednesday 4:056:00PM, 35 Skok Hall/210A Green Hall
Instructor
Dr. Thomas E. Bu
Statistical Methods for Environmental Scientists and Managers (MATH)
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 1
Due 01/30/2017 11:55pm
The file TroutDensity.csv contains observations on density
of trout in stream reaches of varying bank slopes.
1. Import TroutDensity.csv into Rcm
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Getting Started With the R Commander
John Fox and Milan BouchetValat
Version 2.01 (last modied: 8 November 2013)
1
Introduction
The R Commander (Fox, 2005) provides a graphical user interface (GUI)
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Chapter 1
x=
Mean x
1
xi
n
Standard deviation s
s=
1
2
(x i x )
n 1
Coefficient of variation Cv
Cv =
s
100
x
z=
zscore
x
Chapter 2
s xy =
covariance sxy
(x i x )(y i y )
n 1
r=
correlation (Pears
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Here are examples of knowledge statements that could be tested on Exam 2. The oddnumbered questions in the book (with answers in the back) are a good source of specific
questions (beyond what was on t
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Spring 2013
Exam 2
Questions are grouped by book chapter. The option of selecting a question to drop is provided by
chapter. Use only the space below each question to provide your answer (i.
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Laboratory Assignment 5 (due 5/1/2014 11:55 pm)
Import the data in file Cuckoo.csv (in the Practice
Data ZIP file for Lab 10) into Rcmdr. Name the
dataset Cuckoo. Cuckoos are known to lay their eggs
i
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Laboratory Assignment 4 (due 4/17/2014 11:55pm)
Import the data in file ArticRiverDischarge.csv (in the Practice Data ZIP file for Lab 8)
into Rcmdr naming the dataset Flow. The variables are year (ra
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Laboratory Assignment 3 (due 3/6/2014 11:55pm)
Import the data in file NetLife.csv (in Practice Data (ZIP file) for Lab 3 on Moodle) into
Rcmdr. Name it NetLife.
1. Generate 10 (real) random numbers b
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
Laboratory Assignment 2 (due 2/6/2014 11:55pm)
Import the data in file NetLife.csv (in Practice Data ZIP for Lab 3 on Moodle) into
Rcmdr, naming the data set NetLife. The file contains four columns of
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 6
Due 04/28/2014
1. We revisit the bear data from question 1. on assignment 2. The data are provided again in
Assign6_1.csv. We will work only with the male bears for thi
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 5
Due 4/14/2014
Stratification was used to examine heavy metals
contamination of soil in four areas of Austria (the
population of interest is the four areas in total)
whe
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 4  Chapters 6, 7, 8
Due 3/30/2014
1. You are working with a random variable X whose population standard deviation ( ) is
known to be 25. You obtain a random sample from
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Assignment 3 Chapters 3, 4, 5 (i.e. covers a lot of material)
Due 03/10/2014 11:55pm
Rain gardens have been proposed as a solution to the
problem of groundwater loss in urban areas. A sunken
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 2
Due 02/16/2014 11:55pm
The file Bears.csv contains data collected on bears in a field study:
chest is chest girth in inches, weight is bear weight in pounds, and sex
is
Statistical Methods for Environmental Scientists and Managers
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 1
Due 02/03/2014 11:55pm
The file TroutDensity.csv contains observations on density
of trout in stream reaches of varying bank slopes.
1. Import TroutDensity.csv into Rcm
Statistical Methods for Environmental Scientists and Managers (MATH)
ESPM 3012

Spring 2014
ESPM 3012
Homework Assignment 2
Due 02/12/2017 11:55pm
The file Bears.csv contains data collected on bears in a field study:
chest is chest girth in inches, weight is bear weight in pounds, and sex
is