Statistics Help @ Talk Stats Forum - Applied Statistics
http://www.talkstats.com/
Statistics in finance, economics, engineering. Actuarial science. Econometrics. Operations research.enSat, 21 Jan 2017 13:15:17 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Applied Statistics
http://www.talkstats.com/
Re: Permanova design for BACI study (using Primer)
http://www.talkstats.com/showthread.php/68428-Re-Permanova-design-for-BACI-study-(using-Primer)?goto=newpost
Thu, 19 Jan 2017 20:56:24 GMTHello everyone
I am a beginner with PRIMER, could anyone help me in designing my PERMANOVA please...
I have unbalanced BACI design as following:
2...Hello everyone
I am a beginner with PRIMER, could anyone help me in designing my PERMANOVA please...
I have unbalanced BACI design as following:
2 study reaches (one Control, and one Impact),
one year before the impact (2014) and two years after the impact (2015 and 2016) as following:
2014 only Spring (N=6),
2015 four seasons (Winter n=6, Spring n=9, Summer n=6, Autumn n=12),
2016 two seasons (Winter n=6, Spring n=6).
I want to assess effects of morphological restoration of a stream channel on macro-invertebrate community structure (multivariate, and univariate metrics).

Thanks in advance
]]>Applied StatisticsAhmed Farajhttp://www.talkstats.com/showthread.php/68428-Re-Permanova-design-for-BACI-study-(using-Primer)Calculating Optimal Level of Maintenance Spend
http://www.talkstats.com/showthread.php/68424-Calculating-Optimal-Level-of-Maintenance-Spend?goto=newpost
Thu, 19 Jan 2017 14:41:14 GMTNew to this forum and my stat skills have gotten quite rusty since earning my six sigma bb 8 years ago. Coming here to
Basically I want to figure...New to this forum and my stat skills have gotten quite rusty since earning my six sigma bb 8 years ago. Coming here to

Basically I want to figure out what an optimal level of preventative maintenance spend is at each location to minimize the cost of downtime in relation to what is spent on maintenance (cost of maint <= cost of downtime).

I have 3 years worth of monthly data points for about 100 plant locations, the numbers of downtime hours they have each month (including the reason for the downtime so I can filter out planned outages), and the amount of preventative maintenance spent in each of these months. I’ve also calculated the cost of downtime each of these plants.

I know I can put together a linear equation with this data to calculate the number of downtime hours for a given level of maintenance spend, but this does not really answer my question of equilibrium value.

Any help appreciated. A shortened dummy sample of the data I have available is attached for your reference.

Thanks,
Gus

]]>Applied StatisticsTollemGhttp://www.talkstats.com/showthread.php/68424-Calculating-Optimal-Level-of-Maintenance-SpendEmpirical method for % training test
http://www.talkstats.com/showthread.php/68417-Empirical-method-for-training-test?goto=newpost
Wed, 18 Jan 2017 17:29:03 GMTWhen I am determining a percentage training test sets is there an emprical way to determine this?When I am determining a percentage training test sets is there an emprical way to determine this?
]]>Applied Statisticstrinkerhttp://www.talkstats.com/showthread.php/68417-Empirical-method-for-training-test