About this Study Set
This study set covers Data Science through
18 practice questions.
An introductory assessment of key data science concepts, methods, and terminology suitable for high school students. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Fundamentals of Data Science study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which type of graph is best used to show the relationship between two continuous variables?
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A
Bar chart
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B
Scatter plot
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C
Pie chart
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D
Histogram
2
What is the term for a raw, unorganized collection of facts and figures?
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A
Information
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B
Knowledge
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C
Data
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D
Wisdom
3
In a dataset, what is the 'mean' typically referring to?
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A
The middle value
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B
The most frequent value
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C
The average value
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D
The difference between the highest and lowest
4
What is the primary purpose of a data cleaning process?
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A
To encrypt the data
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B
To remove errors and inconsistencies
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C
To increase the file size
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D
To change the file format
5
Which of these is considered a 'categorical' variable?
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A
Height in centimeters
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B
Weight in kilograms
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C
Eye color
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D
Temperature
6
What does the term 'outlier' describe in a data set?
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A
The most common value
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B
A value that is significantly different from others
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C
The average of the data
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D
The total sum of the data
7
Which tool is most commonly used by data scientists to perform calculations and organize data in a grid format?
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A
Web browser
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B
Spreadsheet software
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C
Video player
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D
Audio recorder
8
What is the process of representing data in a visual format like a chart or map called?
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A
Data encoding
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B
Data visualization
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C
Data mining
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D
Data streaming
9
Which of these is a measure of the 'spread' of a dataset?
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A
Median
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B
Mode
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C
Range
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D
Mean
10
In Python, which popular library is primarily used for data analysis and manipulating tables?
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A
Pandas
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B
Pygame
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C
Flask
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D
Django
11
What is a 'sample' in the context of statistics?
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A
The entire population
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B
A subset of the population
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C
A type of computer virus
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D
A database query
12
Which file format is widely used for storing tabular data in plain text?
13
What is the 'median' of the set {1, 3, 3, 6, 7, 8, 9}?
14
Which step comes first in the standard data science lifecycle?
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A
Modeling
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B
Data collection
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C
Data visualization
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D
Deployment
15
What does SQL stand for in the context of databases?
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A
Standard Query Language
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B
Structured Query Language
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C
Simple Question Logic
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D
System Quality List
16
Which of the following is a common way to display 'parts of a whole'?
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A
Pie chart
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B
Scatter plot
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C
Line graph
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D
Box plot
17
What is the 'mode' of the set {2, 2, 4, 5, 8}?
18
In data science, what is a 'feature'?
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A
A file extension
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B
An individual measurable property of the data
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C
The name of the database
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D
A type of computer hardware
