Tidy data is a way of organizing data into rectangular tables, with rows and columns, in which each column is a variable, each row is an observation, and each type of observational unit it kept in a different table.
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data
Data are numbers that represent something about the world; the result of sampling and measurement.
data frame
Data frame is an R object. It stores data in rows and columns.
Appendix of Data Frames Used in Course Textbook
All data frames listed below are automatically preloaded when you run library(coursekata). Link to full repository of R documentation: https://www.rdocumentation.org/ Data Frame Name and Link to R Documentation Ames BikeCommute FatMice18 Fingers ...
data generating process (DGP)
The process that causes variation in the world; when the DGP goes on for a long time, you end up with a distribution that we can start to call a population.
Not Connecting to Server
If you hit the "Connect" button for the R coding exercise windows but it will not connect to the server, please note the following: This error should be rare and should not persist for more than a few minutes. Please do not continue to hit "Connect" ...