2 Which CSS property is used to add rounded corners to an element? A border-style B border-radius C corner-style D box-shadow
3 Which data science step comes just before decision making? A Data visualization B Data collection C Data cleaning D Data storage
4 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
5 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.
7 Which step converts raw data into useful information? A Data cleaning B Data analysis C Data storage D Data collection
9 Which CSS pseudo-class is used to select and style an element when you move your mouse over it? A :hover B :active C :focus D :link
11 Which stage comes after data collection? A Data cleaning B Data visualization C Deployment D Decision making
12 Which language is used to define the structure and content of a web page? A CSS B JavaScript C HTML D Python
13 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
14 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.
15 What is the final stage of the data science life cycle where the results are shared with others? A Data Acquisition B Data Preparation C Communication / Visualization D Asking a question
16 What is the process of finding and fixing errors in a computer program called? A Compiling B Executing C Debugging D Designing
17 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
18 Which visualization is best for comparing percentages? A Pie chart B Line chart C Scatter plot D Histogram
19 What is the main purpose of CSS (Cascading Style Sheets)? A To add interactivity to a website. B To store data for a website. C To create the structure of a website. D To control the visual style and layout of a website.
20 Which stage uses charts and graphs? A Data cleaning B Data visualization C Data collection D Data storage
21 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
22 What helps users quickly grasp complex data? A Raw tables B Long text C Data visualization D Manual calculations
25 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.
26 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
27 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
28 Which chart is commonly used to compare categories? A Line chart B Bar chart C Scatter plot D Histogram
29 The process of cleaning and organizing raw data to make it suitable for analysis is called: A Data Deletion. B Data Preparation. C Data Guessing. D Data Hiding.
30 What does qualitative data describe? A Numbers only B Measurements C Qualities or characteristics D Calculations
31 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
32 Which visualization helps identify relationships between variables? A Pie chart B Bar chart C Scatter plot D Table
34 What is a named block of code in JavaScript that performs a specific task and can be called multiple times? A A function B A loop C An array D A condition
35 Which CSS property is used to change text color? A font-style B text-color C color D background-color
36 What is the final stage of the data science life cycle? A Data collection B Data cleaning C Decision making or deployment D Data visualization
37 What is meant by data analysis? A Collecting data B Storing data C Examining data to draw conclusions D Deleting data
39 Which CSS property is used to change the background color of an element? A color B bgcolor C background-color D background-style
40 Which stage focuses on presenting findings? A Data cleaning B Data visualization C Data collection D Data storage