6.1 What is a pie chart?

A pie chart is a circular chart (pie-shaped); it is split into segments to show percentages or the relative contributions of categories of data.

6.1.1 When are pie charts used?

A pie chart gives an immediate visual idea of the relative sizes of the shares of a whole. It is a good method of representation if you wish to compare a part of a group with the whole group. You could us
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

4.1.1 Space problems

Probably the best known of these is the fact that the internet is running out of space for identifying computers. Each computer in a network needs to be identified by a unique data pattern known as an IP address. The current technology used to transport data around the internet is such that in the comparatively near future we shall run out of space to hold these unique addresses. Happily this is a problem that has been identified and groups of researchers around the globe have developed new t
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

Water in Ethiopia
In Ethiopia, 65% of people don’t have access to clean drinking water. In this album we take a glimpse at the struggles Ethiopians go through each day, just to survive. We look closely at the different methods used to improve the quality of life in the rural highlands as well as the conflict between neighbouring farming villages attempting to share the same water supply. This material forms part of the course U116 Environment: journeys through a changing world.Author(s): The iTunes U team

License information
Related content

Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Is Wikipedia a Credible Source?
It's the go-to website for information on just about anything. But is the info on Wikipedia worth it's weight in megabytes? Trace has the answer and tells us about a new plan to up the accuracy of some of its most popular pages. (03:19)

Author(s): No creator set

License information
Related content

What is Energy?
With an introduction to the ideas of energy, students discuss specific types of energy and the practical sources of energy. Hands-on activities help them identify types of energy in their surroundings and enhance their understanding of energy.
Author(s): No creator set

License information
Related content

Energy Detectives at Work
Students search for clues of energy around them. They use what they find to create their own definition of energy. They also relate their energy clues to the engineering products they encounter every day.
Author(s): No creator set

License information
Related content

Cavitation on Ship Propellers
Summary: Cavitation is the transition of a fluid into vapour due to local reduction of pressure which is generated by high local flow velocities. The transition of a fluid into vapour also occurs during cooking of water by an increase of the local temperature. The term cavitation is generally reserved for conditions in which the temperature of the bulk fluid is not changed. Although cavitation can occur in many situations this course focuses on ship hydrodynamics and ship propellers. The course
Author(s):

License information
Related content

by-nc-sa http://creativecommons.org/licenses/by-nc-sa/3.0/

Maths in Nature and Art
A short introduction to the content of this album.
Author(s): No creator set

License information
Related content

Helicopters: flight basics
A look at the basic physics of helicopter flight.
Author(s): No creator set

License information
Related content

The method of research into animals living on the Galapagos
The research process involved in the study of marine iguanas and giant tortoises in the Galapagos.
Author(s): No creator set

License information
Related content

Readme file for Web Design and Objects
This readme file contains details of links to all the Web Design and Objects module's material held on Jorum and information about the module as well.
Author(s): Dr Gary Griffiths,Open Educational Repository in S

License information
Related content

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/