Category: R

This tutorial shows how you can plot multiple t-distribution bell-shaped curves in R. In short, it is a combination of dt(), plot(), and lines(). Example 1 of plotting multiple t-distribution bell-shaped curves The following is the R code to plot...

This tutorial shows the steps of simulating a dataset for logistic regression R. Logistic regression is based on the following link function. In particular, the following are the steps for simulating a dataset for logistic regression in R. Step 1:...

You can set family=poisson in the glm() function to do Poisson regression in R. glm(model_statement, family = poisson, data = data_file_name) Data Example This tutorial will use a dataset for Poisson regression. The following shows the key variables in this...

This tutorial shows how to remove rows with NA in one column in R. There are two R syntax to remove rows with NA in a single one column. # Use is.na() function dataframe_name[!is.na(dataframe_name$column_name),] # Use na.omit() function na.omit(dataframe_name, cols...

There are two ways to change column names in R, one is to change all column names and a specific column name. The following is the R code syntax to change column names. Method 1: Change a specific column name:...

This tutorial shows how to add density line on histogram in R. The following is the key part of the syntax, which sets freq=FALSE and add line() on the top of the histogram. hist(data_name, freq =FALSE) lines(density(data_name)) Example 1 We...

This tutorial shows how to increase bin density in histogram in R. You can use breaks in hist() to do so. Below is the basic R syntax of doing so. hist(dataset_name,breaks = 50) Example 1 We are going to use...