Does anyone have experience with using SPC for environmental monitoring samples (particulate counts/non-viable and viable samples)? I have been thinking about the best way to analyze, trend and present EM data over a one month period. Using chi-square does not seem like a good idea just because the values are usually zero's and one's. I was thinking of using non-parametric analysis to show whether there has been a change in the data from one month to another month.
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dld 3/1/2001
Change is easier to accept when there is a problem to overcome. The boss can rally the troops and ask everyone to pitch in and offer suggestions on how to proceed. But, if no emergency exists, the boss must clarify his or her vision of what needs to happen and communicate it to everyone. All employees must be encouraged to give suggestions. In other words the vision must become theirs. This will happen if they see a willingness on the part of management to accept their ideas. Change can be threatening. For example, companies initiating team activities are strongly advised to declare that no one will be laid off because of a team recommendation. (Reductions of employees will happen through at attrition). Kick off the change on a small pilot basis. A lot will be learned and many important modifications introduced while it is still small. More importantly, resistance to the new change will be minimized as long as it starts out on a pilot basis. During the pilot, measure, measure, measure. That will assure your change is producing results.