qq: Simplified Normal (Q-Q) Plot

In burrelvannjr/vannstats: Simplified Statistics for PA 606

Description

This function plots a Q-Q/Quantile-Quantile plot (qq) on a given data frame, and uses simplified calls within the function to parse the Q-Q plot by up to 2 variables.

Usage

qq(df, var1, by1, by2)

Arguments

df	data frame to read in.
var1	the dependent/outcome variable, Y. The variable of interest that should be plotted.
by1	the main independent/predictor variable, X_1. A grouping variable by which the Q-Q plot for var1 should be parsed.
by2	a potential second independent/predictor variable, X_2. A second grouping variable by which the Q-Q plot for var1 (already parsed by by1) should be parsed.

Value

This function returns the quantile-quantile plot for var1 in data frame df. Can be split to return a quantile-quantile plot for var1 in data frame df, broken out by var2.

Examples

data <- mtcars

qq(data,mpg,cyl)

burrelvannjr/vannstats documentation built on April 30, 2021, 2:01 p.m.