Projects

CSEMP assessment of cadmium in sediment at Forth Estuary

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean187.7989.29-40.8981.79
linear285.2388.14-38.6177.234.561 10.0327
smooth (df = 2)380.7285.72-35.3670.726.509 10.0107
smooth (df = 3)476.9784.97-32.4864.975.752 10.0165
smooth (df = 4)578.0390.28-32.0264.030.936 10.3333

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall20022017-1.6874-1.6986-0.01119 0.26041-0.0430.9665
last 20 years20022017-1.6874-1.6986-0.01119 0.26041-0.0430.9665

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC0.18290.31000.52740.1542 3.4200.0029
ERL0.18291.20001.88090.154212.199<0.0001

 


Related pages

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