Projects

CSEMP assessment of chromium in sediment at SE of Bressay (Shetland)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean127.3731.87-10.6921.37
linear229.3239.99-10.6621.320.053 10.8185
smooth (df = 2)331.2656.26-10.6321.260.064 10.7997

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200620163.7843.727-0.05668 0.24580-0.2310.8268
last 20 years200620163.7843.727-0.05668 0.24580-0.2310.8268

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
ERL41.5581.000.66740.15844.2130.0042

 


Related pages

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