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. Abstraction
Encapsulation
Inheritance
Polymorphism

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

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3. Response variable is represented on ___________ y-axis
x-axis
none of them
both x-axis and y-axis

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

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

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6. The __________ function is used to sort the values of column in ascending or descending order. sort()
mutate()
manage()
arrange()

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7. R is an__________programming language? Open Source
GPL
Close Source
None of above

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

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9. __________ is the first step of data science life cycle. Data Modeling
Data Acquisition
Model Deployment
Business Understanding

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10. The function that is used to extract or replace substrings in a character vector in ____________ string()
sub_string()
substr()
subchar()

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