(Choice of displays)
What is it?
Effective data display
is a techneque designed to help you to choose the most appropriate display
method for your data.
When to use it
When deciding wich
method of display for your data is required.
What does it achieve?
The technique defines
which type of relationship each form of display will highlight. Selection
of the correct method will promote the required interpretation of your
data.
Summary
Most forms of dispaly
highlight some kind of relationship. The key to the correct choice of
display is, therefor, to identify the relationship you consider most
important.
Bar Charts
Compare severalmdiscreet
items with each other.
Histograms
Show the frequency
distribution over a range of values, for some variable.
Pie charts
Display proportions in relation tom the whole item.
Scatter diagrams
Indicate whether two items appear related to each other
Line graphs
Are used to show how values vary in relation to time
Flowcharts
Are a little different from other charts and graphs, as they are not
used to display data. The flowchart breaks down a process into individual
steps, showing them in a logical sequence.