Projects

CSEMP assessment of cadmium in sediment at Sea of Hebrides

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1149.38151.63-71.69143.38
linear2149.98154.55-70.99141.981.404 10.2360
smooth (df = 2)3151.93160.26-70.96141.930.049 10.8257
smooth (df = 3)4153.83168.23-70.92141.830.096 10.7563

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20062016-2.0709-1.78370.287170.239451.1990.2610
last 20 years20062016-2.0709-1.78370.287170.239451.1990.2610

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.1680.3100.61260.1341 4.5670.0007
ERL0.1681.2001.96610.134114.658<0.0001

 


Related pages

  • Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
  • Assessment methodology for in sediment
  • Accessment criteria for in sediment