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Questions and Answers
What is R?
What is R?
- A popular social media platform.
- A programming language for machine learning, statistical computing, and data visualization. (correct)
- A type of computer virus.
- A video game
What are the predefined data structures in R?
What are the predefined data structures in R?
- Dog, cat, bird, and fish.
- Red, blue, green, and yellow.
- Circle, square, triangle, and pentagon.
- Vector, list, data frame, factor, array, and matrix. (correct)
What are data frames used for in R?
What are data frames used for in R?
- Cooking a meal.
- Playing a musical instrument.
- Machine learning and are similar to table structures in SQL Server and Power BI. (correct)
- Building a house
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Study Notes
- R is a popular programming language for machine learning, statistical computing, and data visualization.
- It is open source and available for Windows and Mac operating systems.
- R can be extended via packages.
- R has predefined data structures, such as vector, list, data frame, factor, array, and matrix.
- A vector stores ordered values of the same data type.
- Factors are a specific type of vector for categorical or ordinal values.
- Lists can have a combination of data types.
- Data frames are the primary data structure used for machine learning and are similar to table structures in SQL Server and Power BI.
- Microsoft technologies integrate with R to enhance machine learning capabilities.
- R has been used by academics, data scientists, and statisticians for a long time.
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