Related InterviewSolutions

• ________ function is similar to the existing subset() function in R but is quite a bit faster.(a) rename(b) filter(c) set(d) subsetI got this question in an interview.The query is from dplyr topic in section R – Data Storage, Formats, Objects and Operations of R Programming
• The dplyr package can be installed from GitHub using the _______ package.(a) dev(b) devtools(c) devtool(d) devdelI got this question during an interview.My question is taken from dplyr in division R – Data Storage, Formats, Objects and Operations of R Programming
• .rda extension used when saving data with function __________(a) save()(b) save.image()(c) save and save.image functions(d) serialize()The question was asked in an online quiz.This question is from Textual Data Formats topic in division R – Data Storage, Formats, Objects and Operations of R Programming
• Which of the following function gives the day of the week?(a) weekdays(b) months(c) quarters(d) semestersI had been asked this question in final exam.The query is from Vectorized Operations topic in portion R – Data Storage, Formats, Objects and Operations of R Programming
• Point out the correct statement?(a) You can also omit variables using the select() function by using the negative sign(b) The arrange() function also allows a special syntax that allows you to specify variable names based on patterns(c) Reordering rows of a data frame is normally easier to do in R(d) The dplyr package provides any “new” functionality to RThis question was posed to me in an online quiz.Asked question is from dplyr in portion R – Data Storage, Formats, Objects and Operations of R Programming
• If we want to save individual R objects to a file, we use the _______ function.(a) save()(b) save.image()(c) serialize()(d) deserialize()I got this question during a job interview.The query is from Textual Data Formats in chapter R – Data Storage, Formats, Objects and Operations of R Programming
• dput() output is in the form of ___________(a) R code(b) text file code(c) binary code(d) both binary and textThis question was posed to me by my school teacher while I was bunking the class.I'm obligated to ask this question of Textual Data Formats in chapter R – Data Storage, Formats, Objects and Operations of R Programming
• One way to pass data around is by de parsing the R object with _________(a) dput()(b) write()(c) read()(d) dget()This question was addressed to me during an interview for a job.I want to ask this question from Textual Data Formats in section R – Data Storage, Formats, Objects and Operations of R Programming
• load() is used for _______(a) reading(b) loading(c) working(d) not existI got this question during an online exam.My doubt is from Textual Data Formats in chapter R – Data Storage, Formats, Objects and Operations of R Programming
• The _________ function is used to generate summary statistics from the data frame within strata defined by a variable.(a) groupby()(b) group()(c) group_by()(d) arrangeThis question was posed to me in a national level competition.The origin of the question is dplyr topic in portion R – Data Storage, Formats, Objects and Operations of R Programming