In addition to NOAA-GLERL, several other institutions also have routine monitoring programs on Lake Erie. Data file LakeErie2.csv contains TP and chla concentration data collected by NOAA-GLERL, Ohio Department of Natural Resources (ODNR), and The University of Toledo (Toledo).
(a) Compare the distribution of the TP concentration data from NOAA to the same from ODNR:
• Are the two distributions different?
• If so, is the difference between the two TP concentration distributions more likely to be additive or multiplicative?
• Are the variances of the two distributions the same?
(b) Describe the difference in the two distributions in non-technical terms.
(c) Repeat the previous comparison to compare TP distributions from Toledo and NOAA, and ODNR and Toledo, and summarize the results.
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