 |
 |
|
       
|
What is a Quartile Graph and what does it show, and how
can that information be put to best use??
A quartile graph is a useful Management Reporting tool that
shows the spread of performance within an organisation. It
displays the percentage of scored measures which have a performance
rating which fall within each of the 4 performance quartiles.
A quartile graph is a very precise way of showing how well
your organisation is performing and can be used to benchmark
your performance against the industry data or against your
peers in a Benchmarking Club. It is also a useful reporting
tool to show how a project is performing. Your vision should
be to always achieve top quartile performance i.e. achieving
75% and above.
A quartile graph provides a very clear indication of performance
and can quickly highlight any slippage into a lower quartile.
1st Quartile = Performance ratings that fall between
75 -100%
2nd Quartile = Performance ratings that fall between
50 -75%
3rd Quartile = Performance ratings that fall between
25 - 50%
4th Quartile = Performance ratings that fall between
0-25%
Looking at the sample graph for Predictability Time Design
and Defects all our scores fall within the 75-100 %
range.
However for Client Satisfaction Service our performance
falls across all 4 performance quartiles.
 62%
of answers have a performance rating between 75-100%
14%
of answers have a performance rating between 50-75%
10%
of answers have a performance rating between 25-50%
14%
of answers have a performance rating between 0-25%
So on 25 % of our scorecards clients have rated our performance
as below average or very poor.
How do I use it to demonstrate improvement?
Users can use the graph to help target areas in the scorecard
which display results in Quartiles 3 and 4 where the company
is performing poorly. Through the production of quartile graphs
over time users can demonstrate that the proportion of purple
and red bars reduces over time.
An initial target would be to eliminate very poor performance
displayed by the purple bar Quartile 4. Although a company
is unlikely to eliminate all below average performance reducing
the percentage of poor performance is an achievable objective.
For further details contact Jennifer Simons 01884 841884
or email jennifers@buildsoft.co.uk.
|
 |
|
|
|
|