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

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2. Heavy data ranging from petabytes or exabytes is called ___________. Heavy Data
Big Data
Large Data
Huge Data

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

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

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

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

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7. The __________ function is used to group data frame. group_by()
List()
matrix()
summerize()

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

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

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10. The estimate of any population is called ___________ Sampling
Statistics
Guess
Subset

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