Numerical Data and Categorical Data
Numerical Data
Categorical Data
Graphical, Video and Audio Data Types
Static and Dynamic Data
Data Coding
Advantages of data coding
Disadvantages of data coding
Barcodes
ISBN (International Standard Book Number)
13-digit ISBN structure
Here is an example of an ISBN code, where each item denotes a specific piece of information about the guide book.
QR Codes
Read the sentences and tick True or False: Categorical data is a data type that is quantitative.
Briefly explain what Static and Dynamic data are.
Give some examples of products that have QR codes or Barcodes οn them.
Briefly explain what data coding is.
Find a website that creates free QR codes and generate the QR codes for the home page and a specific web page of a website of your choice. Do you notice the differences in the black boxes of
Can you give examples of usage of these codes?
Find the ISBN barcode of this book. Can you identify the country’s and the publisher’s numbers?