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computer MCQs

9th • Chapter 09

49 Questions TextBook
1

What are raw facts collected about things around us that can be processed to generate useful information?

A
Analysis
B
Data
C
Reports
D
Insights
2

Which type of data is represented by words, labels, or symbols instead of numbers?

A
Quantitative Data
B
Discrete Data
C
Continuous Data
D
Qualitative Data
3

Customer satisfaction ratings like 'satisfied', 'neutral', 'unsatisfied' are an example of what type of data?

A
Nominal Data
B
Discrete Data
C
Ordinal Data
D
Continuous Data
4

Data that consists of distinct, separate values which are often whole numbers is called?

A
Continuous Data
B
Discrete Data
C
Qualitative Data
D
Nominal Data
5

Which of the following is an example of continuous data?

A
Number of students in a class
B
Number of cars in a parking lot
C
Height of students
D
Number of books on a shelf
6

What is the primary purpose of organizing data into tables, charts, and graphs?

A
To make the data complex
B
To make the data harder to analyze
C
To make the data easier to understand and interpret
D
To hide the data from others
7

Which method of data collection involves asking people questions on paper, over the phone, or online?

A
Observations
B
Interviews
C
Experiments
D
Surveys
8

A Google Sheets file is an example of which data storage technique?

A
Database
B
Data Warehouse
C
Spreadsheet
D
NoSQL
9

Which data storage technology is designed to handle large amounts of structured data, like in banking systems or school records?

A
Spreadsheets
B
NoSQL Databases
C
Databases
D
Text Files
10

What does NoSQL stand for?

A
No Structured Query Language
B
Not Only SQL
C
New SQL
D
Numbered SQL
11

The process of turning numbers and information into pictures like charts and graphs is called?

A
Data Cleaning
B
Data Collection
C
Data Visualization
D
Data Storage
12

Which tool is specifically mentioned for creating detailed and interactive visualizations?

A
Microsoft Word
B
Tableau
C
Notepad
D
Microsoft Paint
13

What is the first and most important step in working with data, which involves cleaning and organizing it?

A
Data Analysis
B
Data Visualization
C
Data Pre-processing
D
Data Reporting
14

In data pre-processing, what is an 'outlier'?

A
A common value
B
A mistake in data entry
C
An unusual or extreme value that doesn't fit the pattern
D
The average value
15

Which measure of centre represents the sum of all values divided by the number of values?

A
Median
B
Mode
C
Mean
D
Range
16

What does the 'mode' of a dataset represent?

A
The middle value
B
The average value
C
The most frequently occurring value
D
The difference between the highest and lowest values
17

What is the main purpose of data science?

A
To solve crimes
B
To create complex charts
C
To solve problems and make decisions using data
D
To store data permanently
18

The data science workflow begins with which step?

A
Data Analysis
B
Data Cleaning
C
Problem Identification
D
Data Visualization
19

Which characteristic of Big Data refers to the sheer amount of data collected?

A
Velocity
B
Variety
C
Volume
D
Veracity
20

The characteristic of Big Data that refers to the different forms data can take (e.g., text, images, videos) is known as?

A
Volume
B
Variety
C
Velocity
D
Value
21

Which industry uses Big Data to optimize routes and manage rides, like the company Uber?

A
Retail
B
Healthcare
C
Finance
D
Transportation
22

Which programming language is popular in data science and comes with libraries like Pandas and Matplotlib?

A
Java
B
C++
C
Python
D
HTML
23

What is SQL an abbreviation for?

A
Structured Query Language
B
Simple Query Logic
C
Standard Query Language
D
Systematic Query Logic
24

What is the technique used to forecast future events based on historical data called?

A
Graph Analytics
B
Predictive Modelling
C
Data Cleaning
D
Data Storage
25

What type of data is 'gender (male, female)'?

A
Ordinal Data
B
Nominal Data
C
Discrete Data
D
Continuous Data
26

Which chart type is mentioned as great for showing nominal data?

A
Line graph
B
Scatter plot
C
Pie chart
D
Histogram
27

What is the process of combining information from different sources to get a complete perspective called?

A
Data Extraction
B
Data Integration
C
Data Cleaning
D
Data Collection
28

What are structured data?

A
Data that is free-form and doesn't fit a specific format
B
Data organized into a format like rows and columns
C
Only numerical data
D
Only textual data
29

Emails, social media posts, and videos are examples of what?

A
Structured Data
B
Quantitative Data
C
Unstructured Data
D
Discrete Data
30

Which of these is a specialized database designed for storing and analyzing large amounts of data from various sources?

A
Spreadsheet
B
Data Warehouse
C
NoSQL Database
D
Standard Database
31

Identifying and fixing errors, and handling missing data is part of which process?

A
Data Validation
B
Data Cleaning
C
Data Gathering
D
Data Interpretation
32

If a survey only includes students from one school to represent the whole city, the data is likely to be?

A
Accurate
B
Complete
C
Biased
D
Random
33

The measure of spread that is the difference between the highest and lowest values is the?

A
Variance
B
Standard Deviation
C
Range
D
Median
34

What does a low standard deviation indicate?

A
The data points are spread out over a wide range
B
The data points are close to the mean
C
The dataset has many outliers
D
The mean and median are the same
35

The process of multiple people working together to create or edit a document in real-time is called?

A
Remote Access
B
Data Backup
C
Collaborative Authoring
D
Version Control
36

What is a key benefit of using cloud-based tools like Google Docs for collaboration?

A
It only works offline
B
It does not save changes
C
It provides version control
D
It is less productive
37

In the context of Big Data, what does 'Velocity' refer to?

A
The amount of data
B
The different types of data
C
The speed at which data is generated and processed
D
The accuracy of the data
38

Which data science technique is used to analyze relationships between different data points, like connections in social media?

A
Predictive Modelling
B
Data Mining
C
Graph Analytics
D
Statistical Analysis
39

According to the text, what is an example of using data science in healthcare?

A
Analyzing shopping patterns
B
Detecting financial fraud
C
Predicting disease outbreaks
D
Optimizing transport routes
40

What is the function of a data backup?

A
To speed up the computer
B
To create a copy of data to protect against loss
C
To clean the data
D
To analyze the data
41

What type of data are test scores?

A
Qualitative
B
Quantitative
C
Nominal
D
Unstructured
42

Which of these is NOT a type of qualitative data?

A
Nominal
B
Categorical
C
Ordinal
D
Continuous
43

Which of the following tools helps in creating surveys online?

A
Google Forms
B
Adobe Photoshop
C
Microsoft Word
D
Google Earth
44

The primary purpose of data visualization is to?

A
Hide complex data
B
Make data easier to understand
C
Generate random numbers
D
Convert text into audio
45

An example of Unstructured Data is?

A
Student ID
B
Fee Status
C
A social media post
D
Test score
46

What does 'data integration' involve?

A
Deleting old data
B
Collecting new data
C
Combining information from different sources
D
Storing data in one place
47

Which of these is an example of Ordinal Data?

A
Colors of cars
B
Shirt sizes (small, medium, large)
C
Types of fruit
D
Gender
48

What is 'Content Analysis' used for in qualitative analysis?

A
Measuring the spread of data
B
Counting the frequency of specific words or themes
C
Calculating the average value
D
Visualizing data with charts
49

Which of these is a key characteristic of quantitative data?

A
Descriptive
B
Categorical
C
Non-numeric
D
Measurable