Live Education Quiz

1

Which tool is used to find errors in a program?

A

Compiler

B

Debugger

C

Interpreter

D

Editor

2

Why is data visualization important?

A

It increases storage size

B

It makes data easier to understand

C

It deletes duplicate data

D

It hides information

3

What is meant by data analysis?

A

Collecting data

B

Storing data

C

Examining data to draw conclusions

D

Deleting data

4

In HTML5, which tag is used to define a footer for a document or a section?

A

B

C

<end>

D

5

Which HTML tag is used to collect user input?

A

<form>

B

<input>

C

D

6

In JavaScript, which keyword is used to declare a variable that can be changed later?

A

let

B

const

C

var

D

variable

7

What does 'data' mean in the context of data science?

A

Only pictures and videos.

B

A collection of facts, such as numbers, words, or measurements.

C

Only the software on a computer.

D

The physical parts of a computer like the mouse and keyboard.

8

Which algorithm is best for large sorted data?

A

Linear search

B

Binary search

C

Bubble sort

D

Insertion sort

9

What is the purpose of decision making in data science?

A

To collect more data

B

To take actions based on insights

C

To clean data

D

To visualize data

10

Which JavaScript method is used to add a new item to the end of an array?

A

shift()

B

pop()

C

push()

D

join()

11

What is the main purpose of Data Visualization?

A

To store data in a database.

B

To make the computer run faster.

C

To represent data graphically for easy understanding.

D

To write complex algorithms.

12

Which life cycle stage checks data accuracy?

A

Data collection

B

Data cleaning

C

Data visualization

D

Decision making

13

Which chart shows parts of a whole?

A

Line chart

B

Bar chart

C

Pie chart

D

Scatter plot

14

What is the ultimate goal of analyzing data in data science?

A

To create colourful charts.

B

To make better decisions.

C

To collect as much data as possible.

D

To write long reports.

15

Which CSS property is used to change the background color of an element?

A

color

B

bgcolor

C

background-color

D

background-style

16

Why is data cleaning necessary?

A

To add errors

B

To improve data quality

C

To increase file size

D

To slow processing

17

What is data science mainly concerned with?

A

Writing computer games

B

Extracting knowledge from data

C

Repairing hardware

D

Designing websites

18

What is Data Science?

A

The art of drawing pictures on a computer.

B

The process of building computer hardware.

C

The study of data to find useful information and patterns.

D

The process of creating animations and games.

19

Which CSS property is used to align text?

A

align

B

text-align

C

font-align

D

position

20

Which visualization is best for showing frequency distribution?

A

Histogram

B

Pie chart

C

Line chart

D

Map

21

Which JavaScript keyword is used to declare a variable?

A

define

B

var

C

int

D

letvar

22

Which JavaScript structure can store key-value pairs?

A

Array

B

Object

C

Function

D

Loop

23

A chart that shows data as a circle divided into slices is called a...?

A

Line graph.

B

Bar chart.

C

Pie chart.

D

Flowchart.

24

Which CSS property is used to change text color?

A

font-style

B

text-color

C

color

D

background-color

25

What does qualitative data describe?

A

Numbers only

B

Measurements

C

Qualities or characteristics

D

Calculations

26

Which loop is used when the number of iterations is known?

A

while

B

do-while

C

for

D

foreach

27

Which of the following is a common way to visually represent data?

A

Writing a long paragraph.

B

Creating a bar chart.

C

Recording an audio file.

D

Sending a text message.

28

Which error is detected during program execution?

A

Syntax error

B

Logical error

C

Runtime error

D

Typographical error

29

Which software is commonly used for basic data visualization?

A

Spreadsheet software

B

Operating system

C

Antivirus software

D

Compiler

30

Which of the following is a source of data?

A

Survey

B

Printer

C

Monitor

D

Speaker

31

Which type of loop in JavaScript continues to run as long as a specified condition is true?

A

for loop

B

while loop

C

if statement

D

switch statement

32

Which stage uses charts and graphs?

A

Data cleaning

B

Data visualization

C

Data collection

D

Data storage

33

What does a bar chart display?

A

Trends over time

B

Categories and values

C

Geographic data

D

Random data

34

What does a pie chart mainly show?

A

Exact values

B

Parts of a whole

C

Trends

D

Relationships

35

Which of the following is the first step in the Data Science Life Cycle?

A

Building a model.

B

Collecting data.

C

Visualizing data.

D

Cleaning data.

36

Which data science step comes just before decision making?

A

Data visualization

B

Data collection

C

Data cleaning

D

Data storage

37

Which skill is essential for a data scientist?

A

Drawing skills

B

Statistical analysis

C

Hardware repair

D

Typing speed

38

In JavaScript, what is used to make decisions and execute different code based on a condition?

A

A loop

B

A function

C

A variable

D

An if-else statement

39

Which data type is based on categories like colors or names?

A

Quantitative

B

Numerical

C

Qualitative

D

Statistical

40

Which visualization helps identify relationships between variables?

A

Pie chart

B

Bar chart

C

Scatter plot

D

Table

🎉 Practice Complete!