announcements: --for lecture next week, read chapters 8 (now read 1-9) --for lab this week, also...
TRANSCRIPT
Announcements:-- For lecture next week, read Chapters 8 (Now read 1-9)-- For lab this week, also read Chapters 7 and 8-- Lab will likely be going outdoors again, so dress appropriately
Thursday, February 5, 7:00 pm, 1024 KIN—FLORIDA NATIVE PLANT SOCIETY MEETING, "Specialized pollinations amongst orchids," Dr. Loran C. Anderson, Department of Biological Science, FSU. Host: Amy Jenkins.
Friday, February 6, 2:00 pm, 327 OSB—BIOLOGICAL OCEANOGRAPHY SEMINAR, "Controlling eutrophication along the freshwater-marine continuum: the need for dual nutrient (N and P) reductions," Dr. Hans Paerl, University of North Carolina, Chapel Hill.
Friday, February 6, 4:00 pm, 1024 KIN—ECOLOGY AND EVOLUTION SEMINAR, "A case study in concept determination: ecological diversity," Dr. James Justus, Department of Philosophy, FSU.
EXAM IN TWO WEEKS:
-- Check out practice exam
-- can bring calculator, but not necessary
-- there will be a statistics problem, but we provide equations and no math will be necessary
-- covers lecture and lab
Announcements:-- Supplies for experiments: we can provide some basic
materials, but we expect that your project won’t require much! Talk to your TA or me if you have any special needs for your project.
-- Answers to the statistics practice problems are posted on the web page.
-- Proposals are due in two weeks.
-- Use TAs (and Dr. Miller) effectively. You can discuss project ideas with us, but it would be best if you do some research first. It will be far better if you come to us with a paper from the literature to show that your idea is well motivated, do-able, and built on an established question.
I. Purpose of this CourseII. The Scientific MethodIII. What are Foragers?IV. Decision Making by ForagersV. Dynamics of Forager-Resource NumbersVI. Experimental Design and Analyses
A. Types of Tests of HypothesesB. ReplicationC. Types of Data CollectedD. Describing Data: GraphicsE. Using Data to Address Hypotheses: Statistics
Thinking about graphics using our class data:
1. # facebook checks per day2. # facebook friends3. Have you been to the third floor (upstairs) of the
Dirac Science library4. Who should Kate end up with: Jack, Sawyer or you
have no idea what I am talking about.5. How do you get to FSU most days?6. Are you female or male?
Which are discrete and which are continuous?
Class Data Variables:
Let’s take a look at the data. How do we visualize discrete data? Use our handy guide!
1. # facebook checks per day2. # facebook friends3. Have you been to the third floor (upstairs) of the
Dirac Science library4. Who should Kate end up with: Jack, Sawyer or
you have no idea what I am talking about.5. How do you get to FSU most days?6. Are you female or male?
Class Data: Displaying discrete dataNo
Yes
Sex
Class Data: Displaying discrete dataMale
Female
Class Data Variables:
Let’s take a look at the data. How do we visualize continuous data? Use our handy guide again!
1. # facebook checks per day2. # facebook friends3. Have you been to the third floor (upstairs) of the
Dirac Science library4. Who should Kate end up with: Jack, Sawyer or
you have no idea what I am talking about.• How do you get to FSU most days?• Are you female or male?
What we are interested in here are difference between groups in some continuous value (e.g. do men or women have more facebook friends?)
Class Data: Displaying Continuous Data
Mean = 531
Using means and variation around the means assumes that the data are normally distributed or are at least symmetric about the mean (i.e., “parametric”). You can check this by making a histogram
Class Data: Displaying Continuous Data
If the data are not symmetric around the mean, they can often be transformed by taking the log or square root or other common methods.
Class Data: Displaying Continuous Data
Class Data: Displaying Continuous Data
Mean= 3.45
Class Data Variables:
Finally, how do we visualize continuous data when the treatment variable is also continuous? Use our handy guide again!
1. # facebook checks per day2. # facebook friends3. Have you been to the third floor (upstairs) of the
Dirac Science library4. Who should Kate end up with: Jack, Sawyer or
you have no idea what I am talking about.• How do you get to FSU most days?• Are you female or male?
As an example, we might wonder if the # of facebook friends causes people to check their facebook page more frequently.
Class Data:
Displaying data:-- discrete groups
-- bar graphs with percent within different groups
-- Continuous data -- histograms, preferably with different
histograms or bars for each discrete group
Class Data:
Displaying data:-- discrete groups
-- bar graphs with percent within different groups
-- Continuous data -- histograms, preferably with different
histograms or bars for each discrete group and some indication of the variation (standard deviaton, standard errors, or confidence intervals)
OR
-- plots, with dependent variable plotted against independent variable.
Worry about violating assumptions of normal distribution.
EXAM IN TWO WEEKS:
-- Check out practice exam
-- can bring calculator, but not necessary
-- there will be a statistics problem, but we provide equations and no math will be necessary
-- covers lecture and lab