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Please note that Dennis Helsel has retired from consulting and will not be answering requests for help in analysis of your data.

Online at:
Our contact info:
Surface Mail:
Practical Stats
2838 Mashie Circle
Castle Rock, CO 80109

Phone:
303 870-4921
Sorry, no fax. We're an electronic shop. Send us a pdf attachment by email.

Email:
ask@practicalstats.com
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