What's new in November, 2008

R

• Frequently Asked Question: How can I calculate Moran's I?
• Frequently Asked Question: How can I perform a Mantel test?
• Frequently Asked Question: How can I generate a variogram?

SAS

• Frequently Asked Question: How can I calculate Moran's I?

Stata

• Frequently Asked Question: How can I calculate Moran's I?
• Frequently Asked Question: How can I generate a variogram for spatial data?

What's new in October, 2008

SAS

• Data Analysis Example: Negative Binomial Regression
• Data Analysis Example: Zero-Inflated Poisson Regression
• Data Analysis Example: Zero-Inflated Negative Binomial Regression
• Annotated Output: Zero-Inflated Poisson Regression
• Annotated Output: Zero-Inflated Negative Binomial Regression
• Macros: Generate a dataset with a given correlation/covariance structure
• Seminar: What's new in SAS 9.2
• Customizing SAS 9.2

What's new in September, 2008

R

• Data Analysis Example: Zero-Inflated Poisson Regression
• Data Analysis Example: Zero-Inflated Negative Binomial Regression
• FAQ: How can I write a binary data file by column?

SAS

• FAQ: How can I create lag and lead variables in longitudinal data?

What's new in August, 2008

G*Power

• Data Analysis Example: One-way ANOVA Power Analysis
• Data Analysis Example: Multiple Regression Power Analysis

R

• Code Fragment: How can I simulate a network in R?

Sample Power

• Data Analysis Example: One-way ANOVA Power Analysis
• Data Analysis Example: Single-Sample T-Test Power Analysis
• Data Analysis Example: Paired T-test Power Analysis
• Data Analysis Example: Independent-Sample T-test Power Analysis
• Data Analysis Example: Two Independent Proportions Power Analysis
• Data Analysis Example: Multiple Regression Power Analysis

SAS

• FAQ: Given a knot location, how can I fit a piecewise model using Proc Transreg?
• FAQ: How can I recode my ID variable to be short and numeric?
• FAQ: How do I interpret odds ratios in logistic regression?
  

SPSS

• FAQ: How do I interpret odds ratios in logistic regression?
  

Stata

• FAQ: How can I find where to split a piecewise regression?

What's new in July, 2008

General

• FAQ: What is the coefficient of variation?
• FAQ: How do I interpret odds ratios in logistic regression?
• FAQ: How do I interpret a regression model when some variables are log transformed?

G*Power

• Data Analysis Example: Power analysis for paired sample t-test
• Data Analysis Example: Power analysis for one -sample t-test
• Data Analysis Example: Power analysis for two-group independent sample t-test
• Data Analysis Example: Two independent proportions power analysis

SAS

• FAQ: When using Proc Transreg, what are the defaults with pspline?
• FAQ: When using Proc Transreg, what are the defaults with spline?
• FAQ: When using Proc Transreg, what are the defaults with bspline?
• FAQ: How can I use find where to split a piecewise regression?

SPSS

• FAQ: How can I explain a three-way interaction in ANOVA?
• FAQ: How can I use the lmatrix subcommand to understand a three-way interaction in ANOVA?
• FAQ: How can I use aggregate and OMS to help explain a three-way interaction in ANOVA?
• Code Fragment: Renaming variables dynamically
• FAQ: How can I run a piecewise regression in SPSS?

Stata

• Code Fragment: Manually generate predicted probabilities from a multinomial logistic regression in Stata
• Code Fragment: Graphing predicted probabilities with an interaction of a binary variable and a continuous variable

What's new in May, 2008

Mplus

• New Methods for Latent Variable Modeling in Mplus by Professor Muthen, with movies
• Two-Level Weighted Least Squares Analysis with Categorical Outcomes by Professor Muthen, with movies

SAS

• SAS FAQ: How do I fit a variogram model to my spatial data in SAS using Proc Mixed?
• SAS FAQ: How can I perform spatial Kriging in SAS?

Stata

• Stata FAQ: How can I explain a 3-way continuous interaction?
• Stata FAQ: How can I explain a continuous by continuous interaction?
  
• Stata FAQ: How can I explain a categorical by continuous interaction?

New Collection to our Stat Books for Loan

What's new in April, 2008

General

• General FAQ: What are the differences between one-tailed and two-tailed tests?

SAS

• SAS FAQ: How do I generate a variogram for spatial data in SAS?


• SAS FAQ: How do I fit a variogram model to my spatial data in SAS?

Stata

• Stata FAQ: How can I explain a three-way interaction in anova?
• Textbook Example: Applied Survival Analysis Chapter 2


• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 3: Diagnostic and Remedial Measures


• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 22: Two Factor Studies-Unequal Sample Sizes and Unequal Treatment Importance


• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 23: Multi-Factor Studies


• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 24: Random and Mixed-Effect Models


• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 25: Analysis of Covariance

New Addition to our Stat Books for Loan

What's new in March, 2008

R

• Graphics by Examples
• FAQ: How can I change the angle of the value labels on my axes?
• FAQ: How can I read binary data into R?
• FAQ: How can I write a binary data file in R?
• Textbook Example: Applied Longitudinal Data Analysis, Chapter 13
  
• Textbook Example: Applied Longitudinal Data Analysis, Chapter 14
  

SAS

• FAQ: In PROC LOGISTIC why aren't the coefficients consistent with the odds ratios?

Stata

• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 17: Analysis of Factor Level Effects
• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 18: ANOVA Diagnostics and Remedial Measures
• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 19: Two-factor Analysis of Variance-Equal Sample Sizes
• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 20: Analysis of Factor Effects in Two-Factor Studies-Equal Sample Sizes
• Textbook Examples: Applied Linear Statistical Models by Neter, Kutner, et. al. Chapter 21: Two-Factor Studies--One Case Per Treatment