1 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.
2 What does qualitative data describe? A Numbers only B Measurements C Qualities or characteristics D Calculations
4 What is data visualization? A Storing data in files B Representing data in graphical form C Deleting unwanted data D Writing algorithms
5 Which chart is commonly used to compare categories? A Line chart B Bar chart C Scatter plot D Histogram
6 Which JavaScript construct is used to repeat a block of code a certain number of times? A if-else statement B for loop C function D switch statement
7 Which data science step comes just before decision making? A Data visualization B Data collection C Data cleaning D Data storage
8 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.
9 Which stage focuses on presenting findings? A Data cleaning B Data visualization C Data collection D Data storage
10 What is the main purpose of an algorithm? A Store data B Design webpages C Solve a problem step by step D Write HTML code
11 In which stage of the data science life cycle are models built to find patterns? A Data Analysis B Data Collection C Problem Definition D Data Deletion
13 What is the main benefit of data science? A Increased typing speed B Better decision making C More storage usage D Hardware improvement
14 Data that has been collected but has not been processed or cleaned is called: A Final Data B Clean Data C Useful Data D Raw Data
15 Which visualization helps identify relationships between variables? A Pie chart B Bar chart C Scatter plot D Table
16 Which CSS property is used to add rounded corners to an element? A border-style B border-radius C corner-style D box-shadow
17 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.
18 In programming, a set of step-by-step instructions to solve a problem is called a/an: A Variable B Function C Comment D Algorithm
21 Which visualization is best for comparing percentages? A Pie chart B Line chart C Scatter plot D Histogram
23 Which CSS property is used to change the background color of an element? A color B bgcolor C background-color D background-style
24 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
25 What is a set of step-by-step instructions for a computer to solve a problem called? A An algorithm B A variable C A syntax D A comment