Professional References
Statistical Analysis Expertise
Samuel R. Friedman  supervisor at NDRI for a decade. I worked with Sam and his colleagues on several large grants to advise, develop and apply statistical data analysis techniques to the grant writing process. Specific data analysis techniques applied include: OLS regression, logistic regression, multinomial logistic regression, ordinal logistic regression, factor analysis, cluster analysis, hierarchical linear models, power analysis, box plots, strip plots, dot plots, mosaic plots, scatterplots. Together we published many peerreviewed articles.
Leslie Prichep  was my supervisor at BrainScope. I worked with Leslie to develop data analysis techniques to support here research. Careful application of logistic regression, discriminant analysis, genetic algorithms, box plots and classification trees helped distinguish people with various conditions on the basis of electroencephalographic data.
Anjali Sharma  At SUNY Downstate, some of my most involved work has been with Anjali analyzing data about epilepsy. In addition to logistic regression we used OLS regression and hierarchical linear models to support and advance Anjali's research.
Agnes Perenyi  Collegue at SUNY downstate who I worked with on research data about neonatology. I helped Agnes implement a combination of fundamental statistical analysis techniques as well as ANOVA and chisquare."
Featured Posts

People often transform their variables. There are two sorts of transformation: One is to simply multiply all...

In statistics and research design, there are two types of study: Experiments and observational studies. Some...

To get a good answer, you must write a good question. Answering a statistics question without context is like...

In a previous post, I dealt with some SAS code for scatterplots. Various problems can arise when using...

Randomized controlled trials (RCTs) are generally regarded as the gold standard in assessing treatments. There...

One question that sometimes arises in doing statistical analysis is whether to use a sophisticated method that...

Signal versus noise Description and inference That is statistics

This is a talk developed by David Cassell and me, and given at NESUG and SGF and WUSS

Sensitivity and specificity are measures of the effectiveness of a diagnostic test. Most often they are used...

Macros can be a very complex topic, but some very simple macros can make life easier for a data analyst or...

When you have two numeric variables and are interested in the relationship between them, the basic statistical...

In regression and ANOVA, an interaction occurs when the effect of one independent variable on the...