Projects

CSEMP assessment of CB52 in biota at Grimsby Roads (Lower Humber)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean171.2275.72-32.6165.22
linear273.1483.80-32.5765.140.083 10.7727
smooth (df = 2)374.6399.63-32.3264.630.504 10.4778

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20022012-0.13181 0.057760.18960.65470.2900.7838
last 20 years20022012-0.13181 0.057760.18960.65470.2900.7838

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 1.059 0.080-2.5835 0.4350-5.9390.9990
EAC 1.05914.040 2.5842 0.4350 5.9400.0010

 


Related pages

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