Shiny

Shiny web apps are online applications that use R on a server (instead of a local machine). These apps are based on the full power of the R language and environment for statistical computing, but do not require the user to install R or even know anything about R. The apps are generally very simple to use.

Effect Sizes

• Standardized Mean Difference, d
• Standardized Mean Difference Using the Control Group Standard Deviation, d.C
• Transform r into d
• Transform d into r

Confidence Intervals

• Standardized Mean Difference, δ
• Standardized Mean Difference (Using Control Group Standard Deviation), δ_c
• Confidence Interval for a Population Contrast, Ψ
• Confidence Interval for a Population Standardized Contrast, ψ
• Signal-to-Noise Ratio, f²
• Square Root of the Signal-to-Noise Ratio, f
• Proportion of Variance Accounted For in the Population (In the DV by Knowing the Levels of the Factor), ω²
• Noncentral t-Distributions
• Noncentral F-Distributions
• Population Correlation Coefficient, ρ
• Population Coefficient of Determination (from a Regression Model), ρ²

Power and Sample Size Planning

• Testing the difference between two population means: Sample Size Given Power
• Testing the difference between two population means: Power Given Sample Size

Bias and Uncertainty Corrected Sample Size for Power

• Two Independent Groups t-test
• Dependent (Paired Samples) t-test
• Between ANOVA, One-way or Two-way
• Between ANOVA, General
• Split Plot ANOVA, One-within/One-between
• Split Plot ANOVA, General
• Within ANOVA, One-way or Two-way
• Within ANOVA, General
• Multiple Regression, One Predictor
• Multiple Regression, Multiple Predictors
• Multiple Regression, All Predictors
  (Instructions; Helpfile; Citation) 

ANCOVA with Heterogeneity of Regression and a Random Covariate

• Variance of the Estimated Treatment Effect