June 2009
Front Matter
Training
17
Suggested
Analyses (1 of 4)
Assess
concentration distributions; compare
concentrations to detection limits
Have data
been censored?
Determine
number of samples/species with concentrations
above detection
Are
sufficient samples available for detailed analyses?
Review
collocated data; inspect summary statistics
and concentration ranges; review time
series plots of concentrations and detection
limits
Does
suspect data quality appear in any years
or species measurements?
Run
screening checks on data from AQS; identify
outliers
How have data
been validated?
Are
data of sufficient quality for analysis?
Example
Analyses
Questions