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. Which one is not a step of Data Preparation process. None of the Them
Feature Selection
Missing Values
Remove Duplicate Entries

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2. which function converts list to a vector? unlist()
de_list()
none of them
cnvert_list()

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

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

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

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6. The lapply() function takes ___________, ____________ and __________ as input. None of them
Data Frame, Array
List, Vector and Data Frame
Array, List, Matrix

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7. ___________ is a concepts of one to many. Abstraction
Encapsulation
Polymorphism
Inheritance

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8. Histograms are good to display the _________ of the data. Quartile
Mode
Median
Mean

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9. Points more than 1.5 times the inter quartile range above the third quartile is the point of ___________. 50th percentile
75th percentile
25th percentile
100th percentile

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10. __________ is used to plot scatter plot of two variables in accordance with the third variable. None of these
Violin graph
Coplot
Heatmap

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