East Carolina University
Department of Psychology
ANOVA, Analysis of Value -- Is your research worth anything? (humor)
ANOVA, Half-Tailed Tests -- ANOVA, F, t, directional tests, and the foolishness of "post hoc" power analysis.
ANOVA2-Followup -- heterogeneity of variance in the factorial ANOVA in Howell (grad) page 404
Beyond Significance Testing -- my notes from the text by Rex B. Kline (2004).
Canonical -- why is it called "canonical" correlation?
Comparing Correlated but Nonoverlapping Correlation Coefficients -- the Pearson-Filon statistic and the ZPF statistic
Comparing Reliability Coefficients -- procedures for comparing one reliability coefficient to another
Confidence Interval for R2 -- putting a confidence interval on R2
Contingency Tables, Low Expected Frequencies -- Is this a problem or not?
Correlation and Causation -- When does correlation imply causation?
Data-Help -- suggestions on setting up a data file
Dichotomizing Continuous Variables -- a bad idea: Discussion from Edstat-L.
Eigenvalues -- origin of the term
Excel: Column Headers -- Print column headers atop each page of Excel output
Excel: Error Bars -- Using Excel to Create a Plot of Group Means With Error Bars
Excel: Sum Cells -- Summing Cells in Excel. Shows how little I know about Excel.
Exploratory Factor Analysis -- review of 1999 article by Fabrigar et al.
e-history -- base of the natural log
EX16-11 -- from Howell's fundamentals text, page 333
Exact-P -- discussions on the use of exact p values
HOWL13-6 -- exercise 13-6 from the Fundamentals text
IV-DV -- Independent and Dependent Variables
KR20 -- Kuder-Richardson 20
Kurtosis -- discussion of kurtosis
Likert -- what is a Likert scale and how do you pronounce "Likert?"
Linear Models -- Games to help the student learn about linear model, correlation, and regression.
Logit -- pronunciations of the word
LESSONS -- these are my online lecture notes for my stats classes
Low Power, Low Reliability -- Is it a big problem when results are significant?
Meta-Analysis -- instructional material, effect size calculator spreadsheet, and computational macros for SPSS, SAS, and Stata
Monty Hall Dilemma-- would you switch doors?
Missing Data -- suggested readings on the topic of how to deal with missing data
NHST-SHIT -- Jack Cohen's wit and a list of references on significance testing.
NHST-Quiz-- A little True-False quiz to test your understanding of Statistical Hypothesis Inference Testing
Nonparametrics -- common misconception that nonparametrics have no assumptions
Norm-Sample Comparison -- comparing your sample mean and variance to that of a normative group
Normality Assumption -- EDSTAT-L discussion on checking data for compliance with an assumption of normality
Omega-Squared -- advice on interpreting the omega-squared statistic
OPSCAN -- using OPSCAN data sheets in your research
Pairwise Comparisons -- discussion of pairwise/multiple comparisons procedures, including common misconceptions about them
Path-Matrix -- using matrix algebra to get effect coefficients in path analysis
Pitman's T -- testing variances with correlated samples
Poems -- Poems about statistics
POWER -- Tools for conducting power analysis
Power, A Posteriori -- Foolishness
Probability of Replication -- is this new statistic of any value?
Regress-History -- origin of the term "regression"
Reliability -- a few notes on reliability from Nunnally's text
Resampling Statistics -- a brief introduction to bootstrapping and permutation/randomization tests
Reversal-Paradox -- discussion of the reversal paradox
SAS -- help using the SAS stat pack
Scales-Transform -- nonlinear data transformations
Signif-Testing -- why Frank Schmidt thinks significance testing the devil's work
Simpson -- Simpson's paradox, with bibliography
Skew -- location of mean, median, mode in skewed distributions
Split in Half --Splitting a data file into two random halves
SPSS -- Help using the SPSS stats pack
SPSS2Excel2SAS -- write SPSS data to Excel and then bring into SAS
SS-Type -- different types of sums of squares
Standardized Confidence Intervals -- why not standardize confidence intervals
STATISTICAL METHODS IN PSYCHOLOGY -- Support page for David Howell's Outstanding Text
Stepwise -- stepwise procedures are the devil's work
t-CLT -- nonrobustness of the t statistic
t-Crit -- t approximated by z and some criticisms of significance testing
Tests of Equivalence and Confidence Intervals for Effect Size Estimates
Type I Errors -- How frequent are Type I errors in the published literature?
Type-I-II-Errors -- Evaluating the Relative Seriousness of Type I versus Type II Errors in Classical Hypothesis Testing
Type III Errors -- Correctly rejecting the null but incorrectly inferring the direction of effect
Return to Dr. Wuensch's Statistical Resources Page.
Contact Information for the Webmaster,
Dr. Karl L. Wuensch
This page most recently revised on 18. April 2008