The interquartile range is a useful measure of dispersion in the data and it has the excellent property of not being too sensitive to outlying data values. (That is, it is a resistant measure.) However, like the median it does suffer from the disadvantage that its calculation involves sorting the data. This can be very time-consuming for large samples when a computer is not available to do the calculations. A measure that does not require sorting of the data and, as you will find in later uni
Author(s): The Open University

The USA workforce data in Table 2 were usefully summarised in Figure 6, w
Author(s): The Open University

Histograms provide a quick way of looking at data sets, but they lose sight of individual observations and they tend to play down â€˜intuitive feelâ€™ for the magnitude of the numbers themselves. We may often want to summarize the data in numerical terms; for example, we could use a number to summarize the general level (or location) of the values and, perhaps, another number to indicate how spread out or dispersed they are. In this section you will learn about some numerical summaries
Author(s): The Open University

In this unit, there have been three occasions when checks have been made to see whether the result is greater than or less than some other value. The first case was in calculating the BMI and determining whether the person was overweight or underweight; the second case was in determining whether a person was walking or running from his footprints; and the third case was in checking whether a phone had been used for more than 30 minutes. Checking whether values are greater than or less than so
Author(s): The Open University

An ellipse with eccentricity e (where 0 < e < 1) is the set of points P in the plane whose distances from a fixed point F are e times their distances from a fixed line d. We obtain such an ellipse in standard form if

1. the focus F lies on the x-axis, and has coordinates (ae, 0), where a > 0;

2. the directrix d is the line with equation xÂ =Â a
Author(s): The Open University

Management: Perspectives and Practice
HR, Marketing, Finance, Operations and Project Management are all key functions of an organisation. These short audio perspectives give an insight into the roles in these areas and how they interact with the rest of the organisation, with examples of common problems, challenges and difficulties that are faced. This material forms part of The Open University course B716 MBA stage 1: Management: Perspectives and Practice.Author(s): The iTunes U team

Introduction

This unit includes reading and writing activities that are geared to developing the use of memory, observation and the senses. The aim is to develop your perceptual abilities, honing your capacity to see detail in the world. You will be encouraged to start seeing the familiar in a new way and to make good use of your own personal history.

This unit is an adapted extract from the Open University courseAuthor(s): The Open University

Digital Library Object - Graphics-oriented battlefield tracking systems: U.S. Army and Air Force int
Author(s): No creator set

Benjamin Franklin, Part V
Animated biography of Benjamin Franklin's adult life aimed at elementary school children. This video is part of the Discovery Education series.
Author(s): No creator set

Desley Deacon interviewed by Katie Valenta
Katie Valenta speaks with Professor Desley Deacon as part of the School of History's ANU Summer Scholar Series. Desley Deacon is Professor Emerita of the School of History, Australian National University, and a Fellow of the Academy of Social Sciences in Australia. Her research interests include women's biography and women in the Public Service. Throughout her career, Deacon has made an invaluable contribution to documenting the history of professional women in Australia and the United States o
Author(s): No creator set

Introduction

This unit aims to provide an understanding of invention, design, innovation and diffusion as ongoing processes with a range of factors affecting success at each stage. You will gain an understanding of the factors that motivate individuals and organisations to invent, and the creative process by which individuals come up with ideas for new inventions and designs, and you will gain an understanding of the obstacles that have to be overcome to bring an invention to market and the factors that i
Author(s): The Open University

Introduction

This course is from our archive and it is an adapted extract from Environmental Control and Public Health (T210) which is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this curriculum area.

Author(s): The Open University

Dundee, jute and empire
Britain was the first country to industrialise, and it acquired the largest empire ever during this same period. But its sphere of economic influence extended far beyond the boundaries of the formal British Empire. This free course, Dundee, jute and empire, focuses on the economics of empire, using a case study of one town, Dundee in eastern Scotland, to explore this huge topic.Author(s): Creator not set

This free course, Approaching literature: Reading Great Expectations, considers some of the different ways of reading Great Expectations, based on the type of genre the book belongs to. This is one of the most familiar and fundamental ways of approaching literary texts. The novel broadens the scope of study of a realist novel, in both literary and historical terms. The course includes extracts from critical writings, which are discussed in detail.Author(s): Creator not set

Introduction

This course presents information about how Scottish healthcare institutions were influenced by the underlying social, economic, political and cultural contexts.

In the seventeenth and eighteenth centuries, a series of innovative models of the body was produced, from the mechanical to the mathematical to the sensible. As groundbreaking anatomical investigation and physiological experimentation were carried out, the map of the body changed, and different parts (vessels, glands, nerves) ac
Author(s): The Open University

Introduction

This course explores the commemoration of war through treating two war memorials â€“ the Sandham Memorial Chapel and the Royal Artillery Memorial â€“ as 'visual texts'. By helping you to respond to visual cues the course aims for you to develop your understanding of these memorials, not only as memorials, but as artefacts or 'made objects'. It does this through consideration of such factors as the location of the monument; its function and purpose; its symbolism or realism; use of materials a
Author(s): The Open University

John Webster, The Duchess of Malfi
This free course, John Webster, The Duchess of Malfi, concentrates on Acts 1 and 2 of John Webster's Renaissance tragedy, The Duchess of Malfi. It focuses on the representation of marriage for love and the social conflicts to which it gives rise. The course is designed to hone your skills of textual analysis. First publi
Author(s): Creator not set

Making sense of art history
You can prepare for this free course, Making sense of art history, by looking around you. It's likely that wherever you are you'll be able to see some images. It's also likely that many of these will be intended to have some sort of effect on you. In the course itself you will be exploring the power of images via a study of contemporary art from the 1980s onwards. Taking the time to look beyond the immediate appearance of an art work to consider what the artist might be trying to say can be imme
Author(s): Creator not set

Products, services and branding
In this free course, Products, services and branding, you will find out about how organisations manage their products and services. This will include learning about how new products are developed and how the existing portfolio of offerings is managed. The particular characteristics of service products will be explained so that you can understand the impact that these features have on how services are managed.Author(s): Creator not set

More working with charts, graphs and tables
Your course might not include any maths or technical content but, at some point during your studies, itâ€™s likely that youâ€™ll come across information represented in charts, graphs and tables. Youâ€™ll be expected to know how to interpret this information, and possibly encouraged to present your own findings in this way. This unit will help you to develop the skills you need to do this, and gain the confidence to use them. This unit can be used in conjunction with, and builds on the â€˜Working
Author(s): Creator not set