percentileDemo: Demonstration of Percentiles vs. Mean / SD

In sharpshootR: A Soil Survey Toolkit

Demonstration of Percentiles vs. Mean / SD

Description

This function can be used to graphically demonstrate the relationship between distribution shape, an idealized normal distribution (based on sample mean and sd) shape, and measures of central tendency / spread.

Usage

percentileDemo(x, labels.signif = 3, pctile.color = "RoyalBlue", 
mean.color = "Orange", range.color = "DarkRed", 
hist.breaks = 30, boxp = FALSE, ...)

Arguments

x	vector of values to summarize
labels.signif	integer, number of significant digits to be used in figure annotation
pctile.color	color used to demonstrate range from 10th to 90th percentiles
mean.color	color used to specify mean +/- 2SD
range.color	color used to specify data range
hist.breaks	integer, number of suggested breaks to hist
boxp	logical, add a box and whisker plot?
...	further arguments to plot

Value

A 1-row matrix of summary stats is invisibly returned.

Note

This function is mainly for educational purposes.

Author(s)

D.E. Beaudette

References

https://ncss-tech.github.io/soil-range-in-characteristics/why-percentiles.html

Examples

if (requireNamespace("Hmisc")) {
  x <- rnorm(100)
  percentileDemo(x)
  
  x <- rlnorm(100)
  percentileDemo(x)
}

sharpshootR documentation built on Aug. 24, 2023, 5:07 p.m.