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[4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.
R is a programming language for statistical computing and data visualization. It has been adopted in the fields of data mining, bioinformatics and data analysis. [9] The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data. R software is open-source and free software.
An intentionally blank page on a PDF document from the Australian Electoral Commission. The document has 80 printable pages, and content ends on page 77. In digital documents, pages are intentionally left blank so that the document can be printed correctly in double-sided format, rather than have new chapters start on the backs of pages.
The R Document occurs during a future time in the United States when crime, especially violent crime, has become so extreme a problem that FBI Director Vernon T. Tynan is promoting an especially drastic solution: a Thirty-Fifth Article Of Amendment to the Constitution of the United States that would allow the Bill of Rights to be suspended in favor of its provisions during a national domestic ...