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

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

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

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

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

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6. The __________ function is used to select data by its column names. all of them
retrieve()
select()
fetch()

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7. _____________ 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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8. ___________ returns a character vector of the same length and with the same attributes as x. regexp()
gsub()
grep()
paste()

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9. How to visualize data in Pie Chart? piechart
package
pipe
pie

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10. Which function is used to add regression line to the scatter plot. smooth()
abline()
abs_line()
None of them

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