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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: 20
Each question carry 10 mark , no negative marking"
Quiz Start
1. OOP stands for?
Orange Oriented Pixels
Option Object Programming
Object Oriented Programming
Object of Program
View Answer
2. _____________ is not a type of operator in R.
Logical
Assignment
Mathematical
Relational
View Answer
3. __________ is used to plot scatter plot of two variables in accordance with the third variable.
None of these
Heatmap
Violin graph
Coplot
View Answer
4. R is an__________programming language?
Open Source
None of above
Close Source
GPL
View Answer
5. Response variable is represented on _______________
no axis
x-axis
y-axis
both x-axis and y-axis
View Answer
6. Which function is used to add labels to the graph in the ggplot() function.
lab()
label()
labs()
All of them
View Answer
7. The function that is used to extract or replace substrings in a character vector in ____________
sub_string()
subchar()
string()
substr()
View Answer
8. ____________ is the raw collection of records, contents and images.
Data frame
Data
Tables
Matrix
View Answer
9. The estimate of any population is called ___________
Guess
Subset
Sampling
Statistics
View Answer
10. ___________ returns a character vector of the same length and with the same attributes as x.
gsub()
grep()
paste()
regexp()
View Answer