Top R Interview Questions for Data Science & Analysts
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08 Jan, 2025
Popular R Interview Questions
A data frame in R is one of the most commonly used data structures for storing and working with data. It is a two-dimensional, tabular structure that allows you to store data in rows and columns, where each column can hold a different type of data (e.g., numeric, character, logical, etc.). Essentially, a data frame is similar to a spreadsheet or a SQL table, and it's very efficient for data manipulation and analysis.
08 Jan, 2025
R Interview Questions and Answers(New)
R is a powerful statistical computing and data analysis language, offering a wide variety of built-in functions for statistical analysis. These functions cover common tasks like summarizing data, performing hypothesis tests, modeling, and more. Here's a comprehensive list of R's built-in statistical functions, categorized by their primary use.
08 Jan, 2025
R Interview Questions and Answers
In R, factors are a data structure used to represent categorical data. They are used when you have a variable that takes on a limited number of distinct values, also called levels. Factors are particularly useful for handling variables that are qualitative in nature, such as gender, education level, country, or other categorical variables.
08 Jan, 2025
R Programming Interview Questions and Answers
In R, missing data is a common occurrence in real-world datasets, and R provides several tools to handle missing values effectively. Missing data in R is represented by the NA (Not Available) value, which is used to indicate that a particular value is absent or unknown.
08 Jan, 2025
Top R Interview Questions and Answers
ggplot2 is a popular data visualization package in R that provides a powerful and flexible framework for creating a wide range of static graphics. It is based on the Grammar of Graphics (hence the gg), which provides a systematic approach to building visualizations by layering different components.
08 Jan, 2025
Top R Interview Questions
R is a programming language and software environment primarily used for statistical computing, data analysis, and visualization. It was designed by statisticians and data scientists to handle complex data operations and is widely used in academia, research, and industries like finance, healthcare, marketing, and data science.
08 Jan, 2025
Top R Interview Questions and Answers(2025)
In R, datasets can be merged using the merge() function, which combines two data frames by common columns or row names, similar to SQL joins. You can control how the data frames are merged (e.g., inner, outer, left, or right join) by specifying different options.
26 Dec, 2024