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graphics

Member Training: An Introduction into the Grammar of Graphics

by TAF Support  1 Comment

As it has been said a picture is worth a thousand words and so it is with graphics too. A well constructed graph can summarize information collected from tens to hundreds or even thousands of data points. But not every graph has the same power to convey complex information clearly. [Read more…] about Member Training: An Introduction into the Grammar of Graphics

Tagged With: communicate results, formatting graphs, graphics, graphs, statistical results

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Member Training: How to Avoid Common Graphical Mistakes

by guest contributer 

Good graphs are extremely powerful tools for communicating quantitative information clearly and accurately.

Unfortunately, many of the graphs we see today confuse, mislead, or deceive the reader.

These poor graphs result from two key limitations. One is a graph designer who isn’t familiar with the principles of effective graphs. The other is software with a poor choice of default settings.

[Read more…] about Member Training: How to Avoid Common Graphical Mistakes

Tagged With: communicate results, formatting graphs, graph, graphics, graphing, quantitative research, software, Statistical Software, tables

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R Is Not So Hard! A Tutorial, Part 14: Pie Charts

by guest contributer  4 Comments

by David Lillis, Ph.D.

In Part 14, let’s see how to create pie charts in R. Let’s create a simple pie chart using the pie() command. As always, we set up a vector of numbers and then we plot them.

B <- c(2, 4, 5, 7, 12, 14, 16) [Read more...] about R Is Not So Hard! A Tutorial, Part 14: Pie Charts

Tagged With: graphics, pie chart, R

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R Is Not So Hard! A Tutorial, Part 13: Box Plots

by guest contributer  4 Comments

by David Lillis, Ph.D.

In Part 13, let’s see how to create box plots in R. Let’s create a simple box plot using the boxplot() command, which is easy to use. First, we set up a vector of numbers and then we plot them.

Box plots can be created for individual variables or for variables by group [Read more…] about R Is Not So Hard! A Tutorial, Part 13: Box Plots

Tagged With: box plot, graphics, R, statistics

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R is Not So Hard! A Tutorial, Part 12: Creating Histograms & Setting Bin Widths

by guest contributer  2 Comments

by David Lillis, Ph.D.

This is Part 12 in my R Tutorial Series: R is Not so Hard.  Go back to Part 11 or start with Part 1.

I’m sure you’ve heard that R creates beautiful graphics.

It’s true, and it doesn’t have to be hard to do so.  Let’s start with a simple histogram using the hist() command, which is easy to use, but actually quite sophisticated.

First, we set up a vector of numbers and then we create a histogram.

B <- c(2, 4, 5, 7, 12, 14, 16)
hist(B)

image001

That was easy, but you need more from your histogram. [Read more…] about R is Not So Hard! A Tutorial, Part 12: Creating Histograms & Setting Bin Widths

Tagged With: graphics, histogram, R, statistics

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  • What R Commander Can do in R Without Coding–More Than You Would Think

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