R is a free, open-source software program for statistical analysis.
RStudio is an integrated development environment (IDE) for R.
To install and use RStudio, you must have R in the system.
R can be downloaded from www.r-project.org
Packages in R contain codes written by other people
R has inbuilt datasets. You can also input data manually or import data from data files.
R allows you to create and customise bar plots and histograms using available data.
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