R Programming Interview Questions
Questions Answers Views Company eMail

How to remove all the objects?

63

What are prerequisites for r’s c interface?

60

What is sapply() in r?

89

How will you combine multiple different string like “data”, “science”, “in” ,“r”, “programming” as a single string “data_science_in_r_programmming” ?

96

How will you create scatterplot matrices in r language?

58

Describe strsplit() in r string manipulation?

44

Explain for loop control statement in r?

53

Explain how to name the list elements in r?

65

Describe regex() in r string manipulation?

46

How will you merge two dataframes in r programming language?

57

What will be the output of log (-5.8) when executed on r console?

55

What are the rules to define a variable name in r programming language?

58

How many data structures does r language have?

50

Which data object in r is used to store and process categorical data?

94

How will you measure the probability of a binary response variable in r language?

47


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Un-Answered Questions { R Programming }

What is the Use of String Utilities in the edtdbg Debugging Tool in R string manipulation?

168


How will you merge two dataframes in r programming language?

57


What is the need for Predictive Analysis in R?

55


Explain how to write files?

58


How would you do a left and right join in r?

61






What is the purpose of using Next statement in R language?

62


What is Predictive analysis process in R?

69


Explain how to generate lists in r?

66


What is readline() in r?

68


What are the different data structures in r? Briefly explain about them.

44


Explain what is t-tests in r?

50


How would you create a box-plot using “plotly”?

49


Differentiate between library() and require()?

73


How to create axes in the graph?

60


What are Ensemble Models in R?

85