Standard_Normal_Distribution.png


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Summary

Description
English: The Standard Normal Probability Distribution with shaded regions
Date
Source Own work
Author D Wells
Other versions

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Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Source code

library(ggplot2)
p <- ggplot(NULL, aes(c(-4,4))) +
  geom_line(stat = "function", fun = dnorm) +
  geom_area(stat = "function", fun = dnorm, fill = scales::muted("blue"), xlim=c(-1,1), alpha=1/4) +
  geom_area(stat = "function", fun = dnorm, fill = scales::muted("blue"), xlim=c(-2,2), alpha=1/4) +
  geom_area(stat = "function", fun = dnorm, fill = scales::muted("blue"), xlim=c(-3,3), alpha=1/4) +
  theme_minimal() +
  theme(axis.text.x = element_text(size = 12)) +
  scale_x_continuous(labels = label_units, breaks = -4:4) +
  xlab("Standard Deviations from the Mean") +
  ylab("Probability Density") +
  geom_segment(aes(x=-1, xend=1, y=dnorm(1), yend=dnorm(1)), linetype="dashed") +
  geom_segment(aes(x=-2, xend=2, y=dnorm(2), yend=dnorm(2)), linetype="dashed") +
  geom_segment(aes(x=-3, xend=3, y=dnorm(3), yend=dnorm(3)), linetype="dashed") +
  annotate("text", x = 0, y = dnorm(1)+0.015, label = "68.3%") + #pnorm(1)-pnorm(-1) %
  annotate("text", x = 0, y = dnorm(2)+0.015, label = "95.4%") +
  annotate("text", x = 0, y = dnorm(3)+0.015, label = "99.7%")

ggsave("Normal_Distribution.png", p, width = 3.7*1.618, height = 3.7, dpi = 1000)
This chart was created with R .

Captions

The Standard Normal Probability Distribution

Items portrayed in this file

depicts

24 June 2019

image/png