Projects

CSEMP assessment of lead in biota at Inner Liverpool Bay

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean181.7584.75-37.8875.75
linear283.6590.05-37.8375.650.102 10.7495
smooth (df = 2)383.6296.12-36.8173.622.027 10.1545

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120124.8974.784-0.1125 0.3511-0.3210.7579
last 20 years200120124.8974.784-0.1125 0.3511-0.3210.7579

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 119.6 26.0-1.5262 0.2066-7.3880.9999
EC 119.61500.0 2.5289 0.206612.243<0.0001

 


Related pages

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