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. __________ are useful when you want to display proportional makeup of a sample in presentations. Bar charts
Bubble charts
Scatter charts
Pie charts

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

7. What is the memory limit in R? 4TB
6TB
8TB
2TB

View Answer

8. Points more than 1.5 times the inter quartile range above the third quartile is the point of ___________. 75th percentile
100th percentile
25th percentile
50th percentile

View Answer

9. The layers in ggplot2 are called ___________. sheets
adds on
geoms
levels

View Answer

10. Which one is not a step of Data Preparation process. None of the Them
Remove Duplicate Entries
Feature Selection
Missing Values

View Answer