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