2Finding and showing the message in numbers
Data by itself rarely tells you much. To be told that oil is selling at $80 a barrel is meaningless unless you know something about typical prices over recent years and months, or how the barrel price translates into petrol prices at the pump. The person trading in oil will need to know about prices and trends over periods of hours and minutes. To create useful information, data must be used in context and must be presented clearly.
This theme starts with an overview of the various ways in which quantitative data can be presented. You will have met many of them before, but our aim here is to emphasise the advantages and disadvantages of each so that you can always select a suitable one for your purpose. ...
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