Exam 5 - Study guide

Class,

It is apparent from your performance on Exam 4 that you have the mechanics down and you have the write-ups down. For Exam 5, you will be tested on how well you know the SPSS procedures we have used already. I might give you some data and ask you to tell me what procedure to use. I might need to do something and ask you what procedure to use.

For example,
1) I might say that I have a column of continuous data and I want to run a procedure that will give me a boxplot (other than the boxplot command under graph menu - notice that the graph commands are not included in the list below). What is that procedure?
2) I might give you a distribution of data that is skewed, I might ask which procedure do I use to transform to reduce the skew? Depending on the distribution I show you the answer might be - Transform using a log function.
3) I might say that I have 3 independent measures and 2 dependent measures (and I would describe them in sufficient detail so you would know if they were repeating or not) and I want to determine if there is an interaction between the variables. What procedure would I use? Under what circumstances would I conduct simple effects? What post hoc test should I use Etc. Which would be the between-subjects factor? (I probably wouldn't ask all of this in one question. It is just an example of the types of questions I might ask to test your working knowledge of the procedures.
4) I might show you some output and ask which procedure might have generated the output (I will only us the output that we are familiar with from doing our homework and what we covered in class).


There is a good diagram on page 10 of Howell that may be helpful. You will also be tested on how well you know the various assumptions that are required for each statistical procedure. You will not be able to use the computer during the test, but you can bring in a page, single sided HAND WRITTEN notes (which you will turn in with your exam). You should already be very experienced with.

Data:
Sort cases
Select cases
Weight cases
Transform:
Compute
Random number seed
Recode
Analyze:
Frequencies
Descriptives
Crosstabs
One-sample t-test
Independent t-test
Paired sample t-test
One-way anova
Univariate (Anova) (Ancova)
Multivariate (Manova) (Mancova)
Repeated measures
Bivariate correlations
--Pearson's
--Spearman's
Linear regression
Factor analysis
Hiloglinear

HILOGLINEAR

Some Lab Notes on HILOGLINEAR you may want to check out

MacLin's Advanced Statistics Blog

Analysis of Covariance Handouts

Homework due next Tuesday.

Using the data from the general survey (the one that we have been using all the time) conduct an analysis of covariance using the sex and race as dependent measures and the respondent’s education as the independent measure. Control for the effects of the father’s education by using it a covariant.

If there is an interaction you will need to graph the figure and refer to it in you write up. Make sure that you discuss the results and discuss them.

Let me know if you have any questions.

Additionally you can do exercise 16.24 for extra credit. You do not have to do “e” or “f”

Study Guide Exam 4

Class,

You should have already scheduled exam 4 with either me or Jen by now.
For exam 4 I will test you over all of the procedures we have covered so far, but factorial designs, repeated measures, and multiple regression will be emphasized.
You should be able to write up the results and write a brief discussion just like we did for exam 3.
You should be able to make figures and format them as I showed you in class.
There will be no syntax, but you will be asked to calculate power for either a t-test or an anova.
I will construct the exam to parallel your homework so you are best to study that.
I also realize that you haven't received much feedback on your multiple regression write ups so far so I take this into consideration.
Let me know if you have any questions.
Take care,

--Dr. M

Homework Due Tuesday

For the homework due Tuesday, go through the General Survey data and conduct at three regression analyses using dependant variables that we haven't used in our examples in class (you can use the independant variables). Use a different regression method for each one (so one should be enter, one should be stepwise, and one should be backwards). For each analysis, compute residuals and do a cross validation. Report and discuss your findings. Make sure to include all output that you are basing your findings on so Jen can see where you are getting your values...

HomeworkDue Friday

Using the data from exercise 15.4 conduct a regression analysis first usign the enter, then stepwise, and then backwards regression. Based on your reading of section 15.10 (page 520) discuss the different results and how the different methods might have lead up to those results.

Using the data from exercise 15.16 use stepwise regression to analyse the variables. Report and discuss yoru results. Next use the regression equation to calculate Y hat. Using the vales obtained from Y hat, calculate the residuals for the for the regression line. Next, repeat this using the enter method. Compare your results from the two methods, indicate which one produced a better fitting line.

Using the data from 15.16, run a stepwise and then enter method analysis request SPSS to conduct the diagnostics. Report the statistics from diagnostic test and compare them with the results from your previous analyese above (where you calculated your own residuals).

G*Power Tutorial

I went through the G*Power slides for both the t-tests and the anova and combined them with a step by step procedure of how to download G*Power to a flash drive and then how to run the analyses. You can find the tutorual at http://www.uni.edu/~maclino/as/g_power.pdf
Let me know if this helps.

--Dr. M

Homework due tuesday

For the homework on due Tuesday we finish working out of chapter 14 - repeated measures design. Follow through the example starting on page 468 to 474. Report and discuss your findings (include a figure).
Next work through the problem staring on page 480. Report and discuss your findings (include a figure).
Do exercise 14.14 - report and discuss your findings (include a figure).

Class Materials

15.1.sav

Multiple Regression Chapter 15

Rat Equipment

<$Rat experimental equipment$>

Materials for Class - Repeated Measures

Class,

These are materials you will likely be using for today's class

Chapter 14 (Repeated Measures) Powerpoints

Table 14.3 data set

Table 14.4 data set

Table 14.7 data set

MacLin's Advanced Statistics Blog

MacLin's Advanced Statistics Blog

Exam 3 Study Guide

Advanced Statistics ­ Study Guide Exam 3


Since statistics are cumulative, you need to be familiar with all of the statistical procedures we have covered so far:
Chi-square
T-tests
Correlation (pearson's and spearman's - you should know the difference between the two)
Regression (you should be able to make a scatter graph and draw a regression line on it).
One-way Anova
Factorial Designs
You should be able to use G Power to calculate power.
You should be able to enter the data by hand if necessary for any of these statistical procedures and you should able to interpret your results and make graphs if asked for.
You should be able to cut and paste output and graphs from SPSS or Excel into word.
You should be able to generate syntax if necessary and you should be able to modify syntax to conduct tests for simple effects.
You should be able to interpret you results.
You should be able to interpret output if given to you. You should also be able to determine what procedure was used to create the output.
If you are familiar with the material and how it was covered on Exam 2 you should be fine with procedures we have already covered. If you are familiar with the material from the homework and how to write it up in APA style you will well on the exam.
THERE WILL NOT BE ANY MULTIPLE CHOICE QUESTIONS ­ THIS TIME. So practice your stats and write-ups. This should all be stuff you are familiar with and have had ample feedback on thanks to Jen. Make sure you are fluent with the procedures so you don’t get stuck and run out of time.
Let me know if you have any questions.


--Dr. M

MacLin's Advanced Statistics Blog

MacLin's Advanced Statistics Blog

Exam 3 - Study Guide

Advanced Statistics – Study Guide Exam 3

Since statistics are cumulative, you need to be familiar with all of the statistical procedures we have covered so far:
Chi-square
T-tests
Correlation (pearson's and spearman's - you should know the difference between the two)
Regression (you should be able to make a scatter graph and draw a regression line on it).
One-way Anova
Factorial Designs
You should be able to use G Power to calculate power.
You should be able to enter the data by hand if necessary for any of these statistical procedures and you should able to interpret your results and make graphs if asked for.
You should be able to cut and paste output and graphs from SPSS or Excel into word.
You should be able to generate syntax if necessary and you should be able to modify syntax to conduct tests for simple effects.
You should be able to interpret you results.
You should be able to interpret output if given to you. You should also be able to determine what procedure was used to create the output.
If you are familiar with the material and how it was covered on Exam 2 you should be fine with procedures we have already covered. If you are familiar with the material from the homework and how to write it up in APA style you will well on the exam.
THERE WILL NOT BE ANY MULTIPLE CHOICE QUESTIONS – THIS TIME. So practice your stats and write-ups. This should all be stuff you are familiar with and have had ample feedback on thanks to Jen. Make sure you are fluent with the procedures so you don’t get stuck and run out of time.
Let me know if you have any questions.

--Dr. M

Excel Line Graph Tutorial

Some of you requested more detail on how to make a graph in excel to graph main effects and interactions. I hope this is helpful.

Excel graph tutorial

Take care,

--Dr. M

NPR's "This I Believe" Series

NPR has a very short essay about failure by Jon Carrol. Carrol begins his essay, "Last week, my granddaughter started kindergarten, and, as is conventional, I wished her success. I was lying. What I actually wish for her is failure. I believe in the power of failure."

"Failure is a good thing"

Chapter 13 Homework pdf

Here are the slides I showed in class for homework 13.
CH13 Homework pdf

Homework for this weekend

The homework for this weekend is to get caught up on ALL of your homework. Everything should be turned in. Any overdue homework which be charged the late fee as outlined in the syllabus.
If you are caught up, have a nice weekend. If you ar enot caught up, please let em know what I can do to help you get caught up.
Take care,

--Dr. M

Chapter 13 pdf

c13_bw.pdf

Chapter 12 homework

I want to go a bit easy here so those who are behind in the homework can catch up. Just work through the examples in chapter 12 using SPSS and the data sets from table 12.1. Make sure you report your results where appropriate.
This should be easy - all you have to do is follow along with Howell's calculations using SPSS...
If is not easy follow the pdf I put up for class today.
Take care,

--Dr. M

Chapter 12 PDF

Chapter 12 pdf