Reviewing existing data can provide the following benefits:
Can be less time consuming
No need to write and test questions, etc.
Most likely has been reviewed or seen by clients
There might be less resistance to change when the data is familiar
to the client
Makes use of already gathered statistical data
Number crunching and statistical analysis may already have
been done
Easier to chart changes over time
Existing data provides a baseline from which to measure improvements
Provides excellent evidence of problem
If deficiencies are noted in employee reviews, reports, etc.
it provides additional justification for exploring training
or other solutions to fix the problem
Minimum effort or interruption of workers
Workers do not have
to be taken away from their jobs for interviewing
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