Projects

CSEMP assessment of cadmium in biota at Grimsby Roads (Lower Humber)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean134.6438.24-14.3228.64
linear236.5744.57-14.2928.570.066 10.7967
smooth (df = 2)337.8454.51-13.9227.840.729 10.3930

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200220125.1545.064-0.0899 0.3489-0.2580.8052
last 20 years200220125.1545.064-0.0899 0.3489-0.2580.8052

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 158.2 26.0-1.8060 0.2083-8.6700.9999
EC 158.21000.0 1.8436 0.2083 8.850<0.0001

 


Related pages

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