Publications by Harold Nelson
Cleveland and Choropleth
Cleveland and Choropleth Harold Nelson 2022-10-23 Setup library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidy...
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Variable Hunt
Variable Hunt Harold Nelson 2022-10-29 library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidyr 1.2.1 �...
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Choropleth Issues
Choropleth Issues Harold Nelson 2022-10-31 Setup library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.2 ── ## ✔ ggplot2 3.3.6 ✔ purrr 0.3.4 ## ✔ tibble 3.1.8 ✔ dplyr 1.0.10 ## ✔ tidyr ...
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Calculator Versus R
Why? What? This is based on a collection of videos provided by Openintro.org. They are available on youtube at https://www.youtube.com/playlist?list=PLkIselvEzpM7N8zVRRUl7V8aTdoTsJ919. Each video demonstrates the use of a TI calculator in performing a typical task for an introductory statistics course. After each video, I have placed a link to on...
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Color
Color Harold Nelson 2022-11-06 Intro We will follow Chapter 12 of Winston Chang’s Graphics Cookbook closely. It is at https://r-graphics.org/chapter-colors. Setup Get the packages we need. library(tidyverse) ## ── Attaching packages ───────────────────────────────────�...
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Notes on Shiny
Notes on Shiny Harold Nelson 2022-11-14 Notes on Shiny Setup Create a project “Shiny” in a folder with that name. Make this your working directory by opening the project. Start a new shiny app using the pulldown. Use the name “Hello”. That will produce the following R code and put it in a folder named “Hello” in your shiny director...
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Employment Indicators
Employment Indicators Harold Nelson 4/8/2020 Setup Load all of our usual packages. Add fredr. library(tidyverse) ## ── Attaching packages ────────────────── tidyverse 1.2.1 ── ## ✔ ggplot2 3.2.1 ✔ purrr 0.3.3 ## ✔ tibble 2.1.3 ✔ dplyr 0.8.3 ## ✔ tidyr 1.0.0 ✔ stringr 1....
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Module 2 Notes
Exploring Relationships Between Two Variables General Points What we’re really interested in when we examine the relationship between two variables is whether or not there is a causal relationship between the two. There is usually a theory telling us that the value of one of the two variables influences the value of the other variable. The fir...
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One Quantitative Variable
One Quantitative Variable Harold Nelson April 2, 2020 Setup if (!require(tidyverse)) install.packages('tidyverse') library(tidyverse) if (!require(openintro)) install.packages('openintro') library(openintro) Descriptive Statistics for One Quantitative Variable This set of exercises is not just for reading. You should have a script window in R...
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One Categorical Variable
One Categorical Variable Harold Nelson 4/3/2020 Descriptive Statistics for one Categorical Variable We’ll look at the mtcars dataset, which is included with the base distribution of R as a dataframe. First we’ll run a few standard commands to examine a new dataframe when we know nothing but the name of the dataframe. str(mtcars) ## 'data.f...
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