SummaryStats: Summary Stats

In ftkjr/SummaryPack: Basic Summaries and Analyses for MAT 342

Description

Function runs some basic multi variable analysis as required for MAT 342 Project 2. Runs a 5 Number Summary, Mean, Inter Quartile Range, Variance, Standard Deviation, then checks for normality by IQR/SD. If there are one to two factors, it runs a t-test and plots it with a histogram and boxplot. If there are more than two factors then it runs a Levene test to check for homoscedasticity (sameness) of variance, if variances are equal across factors, then it runs an ANOVA, where if the means of the factors aren't equal it runs a TukeyHSD table to see which means are different.

Usage

SummaryStats(observations, treatments, confidenceInterval)

Arguments

observations	Your numeric variable, the variable being measured
treatments	Your factors, the variables by which you are separating your observations
confidenceInterval	Should be self explanatory. If this argument isn't entered it assumes alpha = .05 or a 95% interval
post.hoc	Accepts either "Wilcoxon" for pairwise Wilcoxon, or "Dunn" for Dunn's test

Value

Returns a series of basic statistics about your sample. It runs a t-test or Levene -> ANOVA -> TukeyHSD depending on nlevels of treatment.

5 number summary (with mean)	Min, Quartiles, Median, Mean, and Max
Inter Quartile Range	3rd Quartile - 1st Quartile
Variance
Standard Deviation
IQR/SD	Check Normality
t-test	If nlevels of treatment == 1
Welch test	If nlevels of treatment == 2
Levene test	If nlevels of treatment > 2
oneway test	If Levene Test returns heteroscedasticity of treatments
Kruskal-Wallis	If data is nonparametric, runs a Kruskal-Wallis Test
Pairwise Wilcox test	If Kruskal-Wallis returns a significant p value, returns Pairwise Wilcox if post.hoc = NULL or "Wilcoxon"
Dunn's Test	If Kruskal-Wallis returns a significant p value, returns Dunn's Test if post.hoc = "Dunn"
ANOVA test	If applicable by Levene values
TukeyHSD	If applicable by ANOVA values

Note

I hope you like it

Author(s)

Frederick Kaesmann Jr.

References

My github -> https://github.com/ftkjr/SummaryPack

Examples

data("CO2")

SummaryStats(CO2$uptake,CO2$Plant)

ftkjr/SummaryPack documentation built on June 4, 2019, 8:23 a.m.