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CSE MCQs :: R Programming MCQs

R Programming MCQs - R Programming R – History, Overview
R Programming MCQs - R Programming Control Structures, Functions
R Programming MCQs - R Programming Data Storage, Formats, Operations
R Programming MCQs - R Programming Profiling,Simulation, Data Analysis
R Programming MCQs - R Programming Commands, Packages, Visualizing Data
R Programming MCQs - R Programming Nuts, Bolts, Getting Data In and Out
  1. What will be the output of the following code

    set.seed(10)
     x - rbinom(100, 1, 0.5)
     str(x)
    2. A.

    int [1:100] 1 0 0 1 0 0 0 0 1 0 ...
    B.

     int [1:100] 10 0 01 1 0 0 01 0 1 0 ...
    C.

     int [1:100] 1 03 0 1 0 0 0 02 1 0 ...
    D.

    int [1:100] 1 2 3 1 1 0 0 0 1 0 ...

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  2. Point out the wrong statement :
    3. A.
    For each probability distribution there are typically three functions
    B.
    For each probability distribution there are typically four functions
    C.
    r function is sufficient for simulating random numbers
    D.
    None of the mentioned

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  3. How many methods exist for normalizing the data ?
    4. A.
    one
    B.
    two
    C.
    three
    D.
    profiler

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  4. system.time function returns an object of class _______ which contains two useful bits of information.
    5. A.
    debug_time
    B.
    proc_time
    C.
    procedure_time
    D.
    All of the mentioned

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  5. Which of the following creates a new ggplot plot from a data frame ?
    6. A.
    qplot_ggplot
    B.
    ggplot.data.frame
    C.
    ggfluctuation
    D.
    All of the mentioned

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  6. Which of the following is a differentiation related aesthetic ?
    7. A.
    aes_position
    B.
    aes_group_order
    C.
    aes_linetype_size_shape
    D.
    ggorder

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  7. Which of the following is discrete state calculator ?
    8. A.
    discrete_scale
    B.
    ggpcp
    C.
    ggfluctuation
    D.
    All of the mentioned

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  8. What is ggplot2 an implementation of ?
    9. A.
    the Grammar of Graphics developed by Leland Wilkinson
    B.
    3D visualization system
    C.
    the S language originally developed by Bell Labs
    D.
    the base plotting system in R

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  9. Which of the following is an example of a vector graphics device in R?
    10. A.
    JPEG
    B.
    PNG
    C.
    GIF
    D.
    SVG

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  10. Which of the following function works similar to separate() ?
    11. A.
    extract()
    B.
    gather()
    C.
    sep()
    D.
    All of the mentioned

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