R Language quiz questions

R Language interview questions

  • 1.

    What is the difference between rnorm and runif functions ?

    Answer:

    rnorm function generates "n" normal random numbers based on the mean and standard deviation arguments passed to the function.

    Syntax of rnorm function -

    rnorm(n, mean = , sd = ) 

    runif function generates "n" unform random numbers in the interval of minimum and maximum values passed to the function.

    Syntax of runif function -

     runif(n, min = , max = )

    View
  • 2.

    _________ uniforms and customizes plots of packages ggplot2, graphics and lattice.

    1. uniCox

    2. uniPlot

    3. unknownR

    4. None of the mentioned

    Answer
  • 3.

    ______ is used for Visualisation, verification and calibration of ternary probabilistic forecasts.

    1. TOSS

    2. termstrc

    3. ternvis

    4. All of the mentioned

    Answer
  • 4.

    Which of the following package contains functions for reading and displaying satellite data for oceanographic applications with R ?

    1. saves

    2. satin

    3. saws

    4. All of the mentioned

    Answer
  • 5.

    __________ is used for the analysis of air pollution data.

    1. air

    2. openair

    3. opena

    4. All of the mentioned

    Answer
  • 6.

    Which of the following is used to analyze paleontological time-series ?

    1. accelerometry

    2. parfossil

    3. paleoTS

    4. All of the mentioned

    Answer
  • 7.

    Which of the following package provide namespace management functions not yet present in base R ?

    1. stringr

    2. namespace

    3. nbpMatching

    4. All of the mentioned

    Answer
  • 8.

    ________ performs class prediction based on microarray data and clinical parameters

    1. M3

    2. M2

    3. MAclinical

    4. All of the mentioned

    Answer
  • 9.

    ________ is a package for parsing, applying, and manipulating data cleaning rules

    1. EDR

    2. editrules

    3. edrGraphicalTools

    4. All of the mentioned

    Answer
  • 10.

    ______ finds K best paths in a given graph.

    1. kBestShortestPaths

    2. kcirt

    3. ktrees

    4. All of the mentioned

    Answer
  • 11.

    ______ Uses Grieg-Smith method on 2 dimensional spatial data

    1. G.S.

    2. g.data

    3. G1DBN

    4. All of the mentioned

    Answer
  • 12.

    _________ searches for significant clusters in genetic data.

    1. BayesCount

    2. BayesComm

    3. bayesclust

    4. None of the mentioned

    Answer
  • 13.

    ______ specializes in functions for analytical Customer Relationship Management.

    1. adagio

    2. ada

    3. aCRM

    4. All of the mentioned

    Answer
  • 14.

    Which of the following is an R package for the exploratory analysis of genetic and genomic data ?

    1. adeg

    2. adegenet

    3. anc

    4. All of the mentioned

    Answer
  • 15.

    __________ is used for selecting regression transformations

    1. gac()

    2. gpl()

    3. avas()

    4. All of the mentioned

    Answer
  • 16.

    Which of the following contains functions for processing uniaxial minute-to-minute accelerometer data ?

    1. accelerometry

    2. abc

    3. accrued

    4. All of the mentioned

    Answer
  • 17.

    Which of the following package combine multi-dimensional arrays ?

    1. stringr

    2. comb

    3. abind

    4. All of the mentioned

    Answer
  • 18.

    ________ contains tools for Approximate Bayesian Computation (ABC).

    1. str

    2. abc

    3. zyz

    4. All of the mentioned

    Answer
  • 19.

    ________ is used to view packages currently loaded.

    1. library()

    2. search()

    3. .libPaths()

    4. All of the mentioned

    Answer
  • 20.

    ______ is used to get library location in R.

    1. library()

    2. search()

    3. .libPaths()

    4. All of the mentioned

    Answer

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