Test Your Programming Skills with Safcode!


Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 10
Each question carry 10 mark , no negative marking"



Quiz Start


100th percentile
75th percentile
25th percentile
50th percentile

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all of them
retrieve()
select()
fetch()

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subchar()
string()
substr()
sub_string()

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None of them
abs_line()
abline()
smooth()

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Missing Values
Feature Selection
None of the Them
Remove Duplicate Entries

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Bar charts
Bubble charts
Pie charts
Scatter charts

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require(packagename)
Install.packages(packagenames)
Library(packagename)
install(packagename)

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matrix()
group_by()
summerize()
List()

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None of above
Close Source
Open Source
GPL

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sheets
geoms
levels
adds on

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