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v.8.7.009. EPA m.a.0.01 <br /> EPA OUTLIER TEST <br /> 60 <br /> n = 41. Mean = 83.02, <br /> after outlier removal <br /> 50 � 85.09. <br /> Std. Dev. = 95.65, after <br /> outlier removal 95.93. <br /> Critical Tn = 2.877 <br /> 40 after outlier removal <br /> 2.866. <br /> Statistical outliers <br /> are shown as solid squares. <br /> 3 Data, after outlier removal, <br /> z I were found to be log-normally <br /> distributed. <br /> 2® Normality test used: <br /> p �� Shapiro Wilk. <br /> L j I W Statistic = 0.9514 <br /> W Quantile = 0.940 <br /> 10 - - <br /> _ <br /> 0� <br /> Dec 1996 Feb 2003 May 2009 <br /> Note: EPA guidance directs that statistical outliers should not be removed or altered unless independent evidenc <br /> error exists. <br /> Constituent: Turbidity (NTU) Facility: Austin Road LF Data File: AUSTININ <br /> Date: 6/10/09, 3:38 PM Client: Austin Road LF View: Batch <br /> ERST & ASSOCIATES, INC <br />