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Visualizing data: getting started with bar charts

<<Previous post: Exploring data with descriptive statistics and frequency tables Once you’ve done a first-pass analysis of your data using summaries and tables, it’s time to visualize it with graphs and charts. For exploring categorical variables, it makes sense to start with a simple bar chart. We will start with using a built-in function of R, “barplot”, before getting into ggplot2 – a package that Read more

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Merging data files with different variables

<< Previous post: Converting & opening data files for use with R   When your data files have been transformed into the right .rdata format (e.g. by using a program like StatTransfer), you can simply open them in RStudio using: File → Open file… → (find and select the specific .rdata file you would like to open) Sometimes a complete database Read more