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. Response variable is represented on _______________ no axis
both x-axis and y-axis
y-axis
x-axis

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

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

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

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

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

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

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8. When the explanatory variable is categorical, then _____________ graph is used. None of these
box plot
scatter plot
pie chart

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

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

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