R Programming Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

R Programming Interview Questions

Questions Answers Views Company eMail

How would you join multiple strings together?

What is a random walk model and how can you simulate it using r?

101

How can you load a .csv file in r?

What is a factor?

What is a white noise model?

129

What is a white noise model and how can you simulate it using r?

Explain the different data structures in r?

What is a random forest? How do you build and evaluate a random forest in r?

Give examples of “rbind()” and “cbind()” functions in r

156

What is the use of stringr package.

Explain about confusion matrix in r?

How would you extract one particular word from a string?

Given a vector of values, how would you convert it into a time series object?

105

What do you know about the evaluate_model() function from “statisticalmodeling” package

113

How would you fit a linear model over a scatter-plot?

Un-Answered Questions { R Programming }

How you can create a table in r without external file?

What are the data types in r on which binary operators can be applied?

113

What is SAS and SPSS in R?

What is t-tests() in R?

What is Predictive analysis process in R?

121

What are the data structures in R that are used to perform statistical analyses and create graphs?

307

What do you mean by data visualization in R?

Enlist the addition function used in R language?

Describe nchar() in r string manipulation?

What are applications of recursion?

Which function is used to create a histogram visualisation in r programming language?

129

R programming language has several packages for data science which are meant to solve a specific problem, how do you decide which one to use?

Write a custom function in R?

How will you merge two dataframes in r programming language?

Explain if control statements in r?

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