Y12 EC Unit 1 Data Science Week 2 Post Quiz

Which of the following best describes how informatics helps in the analysis of large datasets?

• A) It uses algorithms to automate data collection.

• B) It provides tools for visualizing raw data.

• C) It supports the organization, analysis, and interpretation of data to identify patterns.

• D) It uses data to generate unstructured feedback.

Which of the following is an example of informatics being used to derive meaningful insights from data?

• A) Manual data entry

• B) Automated email responses

• C) Data mining and machine learning

• D) Web browsing history

Which visualization technique is most effective for representing hierarchical relationships in data?

• A) Line graphs

• B) Bar charts

• C) Network diagrams

• D) Pie charts

What is the primary purpose of dashboards in data visualization?

• A) To provide detailed data analysis for specialists

• B) To present data in a visually engaging format for quick decision-making

• C) To showcase the geographical distribution of data

• D) To represent data in an unstructured form

Which of the following would be best suited for visualizing geographic data?

• Pie charts

• Maps

• Infographics

• Bar graphs

Which visual representation would be most effective for showing trends over time?

• Line graph

• Pie chart

• Infographic

• Network diagram

Which of the following is a key characteristic of structured data?

• It consists of free-form text and multimedia files.

• It follows a predefined model such as tables or schemas.

• It is difficult to search and organize.

• It lacks a fixed format or structure.

Which of the following is an example of unstructured data?

• Customer feedback in text form

• Sales transactions in a database

• Employee records in a spreadsheet

• Inventory lists with product IDs

Which of the following types of data is easiest to store and retrieve using a relational database?

• Images and videos

• Unstructured data

• Structured data

• Free-text comments

Likes, emoticons, and memes are often used as feedback mechanisms on social media. What type of data are they typically classified as?

• Structured data

• Alternative data

• Processed data

• Noise data