Which test should I use?
Review for Test 2
Binomial test & distribution
Analyzes proportions
Individuals are divided into two mutually exclusive groups
Binomial distribution describes a probability distribution for
the number of successes (X) from a fi
BIOL 3P96: Biometrics
Professor
Dr. Lori MacNeil
Department of Biology
Email: lmacneil@brocku.ca
Office: MC F218
Office hours Thursday 2:00 4:00 or by appointment
Textbook
The Analysis of Biological
Data, 2nd Edition
Whitlock and Schluter
Evaluation
BIOL 3P96 Biometrics
January 13, 2015
Describing data
Chapter 3
Descriptive statistics
Numerical data:
Location
Where the observations are centered
Mean, median, and mode
Spread
How variable the measurements are from individual to
individual
Standar
BIOL 3P96 Biometrics
March 23 2016
Designing experiments
Chapter 14
Observational studies
Illuminate patterns but cannot disentangle the effects
Affected by confounding variables
Unmeasured variables that change in tandem with one or more of
the measur
BIOL 3P96 Biometrics
January 20 2015
Probability
Chapter 5
Probability of an event
Probability: The proportion of times the event would
occur if we repeated a random trial over and over again
under the same conditions
Random trial: A process or experime
BIOL 3P96 Biometrics
February 10 2015
The normal distribution
Chapter 10
Continuous variables
Numerical variables that are measured, rather than
counted
Length, weight, velocity, time, rate, etc.
Bellshaped curves
Many numerical variables have frequen
BIOL 3P96 Biometrics
March 9 2016
Handling violations of assumptions
Chapter 13
When assumptions are violated
Four alternative options to analyze the data:
Ignore the violations
Transform the data
Use a nonparametric method
Use a permutation test
Igno
BIOL 3P96 Biometrics
February 3 2015
Fitting probability models to
frequency data
Chapter 8
Goodness of fit tests
Compare an observed frequency distribution with the
frequency distribution expected under a simple
probability model
Rejecting the null hyp
BIOL 3P96 Biometrics
February 24 2016
Comparing two means
Chapter 12
Comparing two means
Data contains one categorical variable and one numerical
variable
Goal is to compare the mean of a numerical variable
between two different treatments or groups
Ex
BIOL 3P96 Biometrics
January 27 2015
Proportions
Chapter 7
Proportions
The fraction of individuals having a particular attribute
Also the probability that an individual randomly sampled
from that population will have that attribute
Ranges from zero to
Catabolic pathways:

Take o2 and carbons (in fats, proteins, carbs) and catalyze them (break them down) to
produce ATP to fuel various anabolic rxns
o Protein synthesis, cell growth, DNA, RNA, etc
Glucose metabolism:
Glucose is broken down into 2 pyruvat