[quote=ITD;61913]I beg to differ, the study involved a sizeable sample across a broad section of the lake, more than adequate to represent what is really happening on a typical day on the lake. If you were as well versed in statistical sampling as you hint, you would understand this. I can guarantee that if the study showed that there was a problem on the lake you would be swearing up and down that the study was right. If your group's assertion that the lake has turned into the "wild west" was true then I would have expected at least let's say maybe 2 % of the boats to have been travelling more than 45 mph./quote]
First of all, I’m not part of any pro-speed limit group. This is not a conspiracy – I’m simple a NH resident who believes that NH lakes need a reasonable speed limit. And I'm sick of you guys misrepresenting the facts here.
For your information, I’ve taken a number of college courses on statistics – including Research Methodology just last semester – so I do know that the accuracy of any data sampling is largely dependant on the percentages involved. In any data collection the number of individuals studied is completely meaningless without knowing the size of the overall population that makes up the study group. The same is true for the time periods involved, and for anything else that might be a factor in a study (like weather, and time of day).
The data collected is not considered viable unless it can be determined that it accurately represent the entire study group. And studies of this type are not even considered viable when members of the test population know about the study and the location of the study areas.
You and others here try to use the report as magical proof that speed is not an issude. Do you expect anyone to believe that this study accurately determined the boat speeds on the entire lake over the entire summer? There just wasn't enough data collected to make the study viable (since only portions of the lake were covered, and data was collected during less than 2% of the daytime boating season).
On top of that, the fact that radar was being used on the lake last summer was well published - along with the location of the study areas. No traffic study is ever considered viable when the public is aware that it is taking place.
The report does not even give the statistical analysis of the data collected – if it had, then the percentages would have been factored into the analysis, and the degree of accuracy of the study would have been given.
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The report includes a calendar that clearly indicates that the testing was done on both weekdays and weekends. In fact weekday tests outnumber weekend day tests by almost 2 to 1. How can you mess that up?????? You really need to stop...
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This is a quote, taken directly from the report:
While emphasis was placed on weekend boating activity, data was also collected on weekdays. Just because data was collected on more weekdays, does not mean that more time was spent collecting data on weekdays. You would need the log with the hours per day that data was being collected to determine that.
How much data was collected out on the Broads?