R Interview Questions For Freshers

What is the purpose of R?

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How do you read a CSV file in R?

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How do you install a package in R?

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What is the difference between a list and a vector in R?

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Explain what a vector is in R.

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How do you assign a value to a variable in R?

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R Intermediate Interview Questions

How would you handle missing values in a dataset in R?

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Explain what a dataframe is in R and how it differs from a matrix.

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What is the purpose of the 'dplyr' package in R?

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What are the differences between 'grep', 'grepl', 'gsub', and 'regexpr' in R?

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What is the purpose of the 'apply' family of functions in R?

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Explain how to generate random numbers in R.

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What is the difference between '==' and '===' in R?

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R Interview Questions For Experienced

How do you create a custom function in R?

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Explain the concept of formula in R.

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What is the use of the 'Matrix' package in R?

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How do you handle multicollinearity in a regression model in R?

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Explain the concept of lazy evaluation in R.

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What is the purpose of the 'lubridate' package in R?

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How do you perform regression analysis in R?

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Explain the concept of namespaces in R.

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What is the use of the 'parallel' package in R?

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How would you handle outliers in a dataset in R?

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What is the purpose of the 'purrr' package in R?

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Explain how to perform text mining in R.

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What is the difference between '<<-' and '<-' in R?

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How do you handle large datasets in R to avoid memory issues?

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What is the purpose of the 'ggplot2' package in R?

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Explain the concept of factors in R.

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Explain the use of 'try', 'tryCatch', and 'finally' in R.

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What are the different types of loops available in R?

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