The Purpose of Graphs
A good graph will:
- save the user time - information is sifted and refined
- gain user attention - easy and pleasing to the eye to generate reader motivation
- show relationships and permit study of the data
- the user should be able to look for regularities and irregularities with in the data
- study data points and their spatial relationships to each other may reveal meanings not otherwise observed
- in deciding whether to use a chart or a graph - the form which best shows the relationships should be used
- suggest new ideas - a good graph might reveal connection that otherwise would not be perceived
- make efficient use of information - display fundamental relationships by way of visual convention.
Three things will happen with a good graph:
- the graph will be studied
- the graph will be accepted
- the graph will be remembered.
Remember, clinical and regulatory submission data points are the building blocks of a graph and as such a QC (SOP) procedure must be developed and utilized to ensure accuracy in data entry, programmatic presentation and graphics. Graphs are most often "double" program validated first, followed by a second, final data QC step.
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