Statistics for Environmental Engineers

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32


2.548


1324


49


1.641


1199


16


4.721


1046


33


1.457


1063


50


2.991


1279


17


4.241


1068


34


1.68


1242


51


3.031


1203


52


2.972


1197

3.4 Effluent Suspended Solids. The data below are effluent suspended solids data for one year of a wastewater treatment plant operation. Plot the data and discuss any patterns or characteristics of the data that might interest plant management or operators.


Day


Jan


Feb


Mar


Apr


May


Jun


Jul


Aug


Sept


Oct


Nov


Dec


1


33


32


16


25


21


20


29


26


6


23


18


11


2


37


22


14


26


30


11


36


33


18


13


16


9


3


23


22


12


26


31


22


68


21


13


13


20


12


4


28


38


14


30


28


21


32


21


8


9


15


15


5


41


10


13


27


31


21


24


19


9

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