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HARRIS COUNTY WATERSHED PROTECTION GROUP

HARRIS COUNTY WATERSHED PROTECTION GROUP. Lessons Learned on Storm Water Quality Research Projects. Presented by: Trent Martin July 15, 2008. Statistical Significance – Our “Holy Grail”. Statistical Significance – Our “Holy Grail”. POWER.

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HARRIS COUNTY WATERSHED PROTECTION GROUP

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  1. HARRIS COUNTY WATERSHED PROTECTION GROUP Lessons Learned on Storm Water Quality Research Projects Presented by: Trent Martin July 15, 2008

  2. Statistical Significance – Our “Holy Grail”

  3. Statistical Significance – Our “Holy Grail” POWER

  4. Statistical Significance – Our “Holy Grail” POWER Things that affect POWER: * variability

  5. Statistical Significance – Our “Holy Grail” POWER Things that affect POWER: * variability * level of significance

  6. Statistical Significance – Our “Holy Grail” POWER Things that affect POWER: * variability * level of significance * size of difference between sets

  7. Statistical Significance – Our “Holy Grail” POWER Things that affect POWER: * variability * level of significance * size of difference between sets * number of samples collected

  8. Quality Assurance Project Plan (QAPP)

  9. It’s OK to ask for help!

  10. K.I.S.S. - Keep it simple. Answer one question at a time.

  11. Any Questions? For more information: Harris County Watershed Protection Group (713) 290 - 3000 or www.CleanWaterways.org Physical Address: 9800 Northwest Frwy., Suite 305, Houston, TX 77092

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