Engineering Questions with Answers - Multiple Choice Questions
MCQs on Basics of Data Science
1 - Question
Which of the following would be more appropriate to be replaced with question mark in the following figure?
a) Data Analysis
b) Data Science
c) Descriptive Analytics
d) None of the mentioned
View Answer
Answer: b
Explanation: Data Science is a multidisciplinary which involves extraction of knowledge from large volumes of data that are structured or unstructured.
2 - Question
Point out the correct statement.
a) Raw data is original source of data
b) Preprocessed data is original source of data
c) Raw data is the data obtained after processing steps
d) None of the mentioned
View Answer
Answer: a
Explanation: Accounting programs are prototypical examples of data processing applications.
3 - Question
Which of the following is performed by Data Scientist?
a) Define the question
b) Create reproducible code
c) Challenge results
d) All of the mentioned
View Answer
Answer: d
Explanation: A data scientist is a job title for an employee or business intelligence (BI) consultant who excels at analyzing data, particularly large amounts of data.
4 - Question
Which of the following is the most important language for Data Science?
a) Java
b) Ruby
c) R
d) None of the mentioned
View Answer
Answer: c
Explanation: R is free software for statistical computing and analysis.
5 - Question
Point out the wrong statement.
a) Merging concerns combining datasets on the same observations to produce a result with more variables
b) Data visualization is the organization of information according to preset specifications
c) Subsetting can be used to select and exclude variables and observations
d) All of the mentioned
View Answer
Answer: b
Explanation: Data formatting is the organization of information according to preset specifications.
6 - Question
Which of the following approach should be used to ask Data Analysis question?
a) Find only one solution for particular problem
b) Find out the question which is to be answered
c) Find out answer from dataset without asking question
d) None of the mentioned
View Answer
Answer: b
Explanation: Data analysis has multiple facets and approaches.
7 - Question
Which of the following is one of the key data science skills?
a) Statistics
b) Machine Learning
c) Data Visualization
d) All of the mentioned
View Answer
Answer: d
Explanation: Data visualization is the presentation of data in a pictorial or graphical format.
8 - Question
Which of the following is a key characteristic of a hacker?
a) Afraid to say they don’t know the answer
b) Willing to find answers on their own
c) Not Willing to find answers on their own
d) All of the mentioned
View Answer
Answer: b
Explanation: Hacker is an expert at programming and solving problems with a computer.
9 - Question
Which of the following is characteristic of Processed Data?
a) Data is not ready for analysis
b) All steps should be noted
c) Hard to use for data analysis
d) None of the mentioned
View Answer
Answer: b
Explanation: Processing includes merging, summarizing and subsetting data.
10 - Question
Raw data should be processed only one time.
a) True
b) False
View Answer
Answer: b
Explanation: Raw data may only need to be processed once.