Activity Log
January 2012
This activity log reports the projects that Professional Statistical Services conducted during January of calendar year 2012. Unless otherwise specified, all computerized analyses were conducted using SPSS.
Project Title 
Description 
Methods Used 
Status 
Graduate statistics and probability course problem set 
Compute probability mass function (pmf), use pmf to compute means and SDs, compute the cumulative distribution function (cdf), determination of game fairness, compute expected values from pmfs, binomial probabilty problems 

completed 
Psychology graduate statistics course problem set 
Assess normality of distributions, identify outliers, calculate alpha, beta, and alphabeta effect estimates, factorial ANOVA in SPSS, interpretation of the Levene statistic, write up ANOVA results in APA format. 

completed 
Psychology graduate statistics course problem set 
Computation of Cohen's d, computation of power using G*Power, computation of number of subjects needed to obtain specified power to detect a specified effect size as significant, meaning of power, relationship between power, type 1 error, and effect size. 

completed 
Psychology graduate statistics course problem set 
Identification of difference between descriptive and inferential use of statistics, difference between parametric and nonparametric statistics, difference between internal and external validity, inferences from convenience samples, sums of squares computation, applying normal distribution probabilities, standard error of the mean, choice of t vs. z distribution, test of normality assumption, computation of productmoment correlation, data transformations 

completed 
MBA statistics course problem set 
Determine sample point probabilities, conditional probabilities, probabilities from contingency tables, determination of independent events, develop probability tree diagram, random sampling using tables and Excel. 

completed 
MBA statistics course problem set 
Determination of appropriate statistical tests, chisquare tests of differences in frequency distributions, interpretation of frequency distributions, distributional characteristics (e.g., skew, kurtosis), confidence intervals, zscores, boxplots, scatterplots. 

completed 
MBA Management Science problem set 
Problems requiring determination of optimal order quantity under various constraints; 

completed 
Assist in preparation of dissertation proposal 
Assist in conceptualization of the study; assist in wording of research questions and hypotheses; assist in writeup of methods chapter. 

completed 
Analyses and writeup of animal and human clinical trial data on dental products 
Creating Excel templates for presentation and analysis of clinical trial data for animals and humans comparing the effect of a plaquereducing agent to a placebo; writing up journal articles on results. 

ongoing 
MBA Management Science problem set 
Problems requiring computation of internal rate of return, expected value, waiting times, 

completed 
Analysis of data from a study of cognitive problem solving strategies 
Extensive work on creation of data set for analysis, including about 180 separate variable creation commands; tabulation of mean counts and category percentages for many crosssections of the sample; comparisons of groups using nonparametric tests. 

completed 
Analysis of neuropsychological research data 
Analysis of a large amount of data collected in a research study; many multifactorial ANOVAs comparing different groups and subjects under different conditions; many charts and tables. 

completed 
Graduate statistics problem set 
Large number of short case problems in statistics, covering hypothesis formulation, univariate and bivariate parametric statistical tests, chisquare, tests of assumptions, nonparametric alternatives to bivariate tests, productmoment correlations, critiques of research designs, and analysis of variance and covariance 
All analyses were required to be conducted in Minitab. 
completed 
Graduate statistics problem sets 
Topics include hypothesis specification, levels of measurement, 2way ANOVA and correlation 

completed 
Medical research study 
Develop an analysis strategy, analyze data, and writeup Method and Results sections, with tables and figures, for journal article. 

completed (article accepted) 
MBA Management Science problem sets 
Topics include forecasting, control charts (X and R), regression models, and a very difficult linear programming problem. 

completed 