Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. OOP stands for? Object of Program
Orange Oriented Pixels
Option Object Programming
Object Oriented Programming

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2. How to installed packages in R? Install.packages(packagenames)
Library(packagename)
install(packagename)
require(packagename)

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3. Which function is used to add labels to the graph in the ggplot() function. lab()
label()
labs()
All of them

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4. What is the memory limit in R? 2TB
6TB
4TB
8TB

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5. The vertical dashed lines in the boxplot are known as ______________. Notches
Outliers
Whiskers
Tails

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6. _____________ is an open source R package that provides an elegant and powerful Web framework for building Web applications. Leaflet
Shiny
Dash
Ggplot2

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7. What is the function used to read CSV files into R? read()
readfile()
csv()
read_csv()

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8. The lapply() function return ___________ as output. Vector
Array
Data frame
List

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9. __________ are useful when you want to display proportional makeup of a sample in presentations. Bubble charts
Scatter charts
Bar charts
Pie charts

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10. How are null entries in a data frame denoted in R? n/a
NaN
na
None of these

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