Data Science Lesson 2 Quiz

What does Data Science mean?

• Getting meaning from data

• Transforming data

• Showing data

What does visualisation mean?

• Showing data using transformed data

• Showing data in a graph or picture way

• Compressing data to display it

What does Big Data mean?

• Big data means data that is extremely large and will always crash the computer if open the file

• Big data means data that is extremely large and diverse

• Data from one source that is extremely large

What is the main reason why companies/governments use Big Data?

• Big data allows companies/governments to see the whole picture and make better-informed decisions

• Big data allows companies/governments to see the related data sets so they can isolate an idea

What did we use the website www.gapminder.org/tools for?

• to investigate details about countries e.g. which has the highest income

• to investigate how countries have changed over time

Why is it important that when we are looking at data, it needs to be reliable?

• if it is not reliable, the outcomes will be correct

• if it is reliable, the outcomes will be incorrect

• you could get taken to court if you searched the data

• if it is reliable, the outcomes will be correct

Netflix uses Big Data, what is the main reason?

• to make less money

• to analyse all the data about their customers and make better decisions e.g. which type of films to create

• to transfix the data

• so they can analyse how to get more customers and transpose the data

Companies have to use Big Data

• Yes

• No

Recap Question - What does HDD stand for?

• Hard Disk Drive

• Hyper Disk Drive

Recap Question - What does the CPU do?

• most calculations

• transfix data