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An example computer output is presented below <br /> Kendall Rank Correlation for chloride,date <br /> Score 85 0000 <br /> Tau 368 <br /> Z-Value 2 397 <br /> P-Value 0165 <br /> Tau corrected for ties 375 <br /> Tied Z-Value 2 439 <br /> Tied P-Value 0147 <br /> #Ties,chloride 4 <br /> #Ties,event 0 <br /> One case was omitted due to missing values <br /> • <br /> The parameters given in the output are <br /> Score = Mann-Kendall statistic (S) <br /> The Kendall-tau method assigns a positive or negative score based on the <br /> differences between the data points The first step is to list the data in the <br /> order in which they were collected over time, and then determine the sign <br /> of all possible differences <br /> The Mann-Kendall statistic (S) is then computed, which is the number of <br /> positive differences minus the number of negative differences If S is a <br /> large positive number, measurements taken later in tune tend to be larger <br /> than those taken earlier, 1 e., an upward trend Similarly, 1f S is a large <br /> negative number, measurements taken later 1n tune tend to be smaller, i e , <br /> a downward trend <br /> A large positive number of 85 is shown in the example, therefore, an <br /> upward trend is likely <br /> SAC N Tln794\279410001 CS-98vmsmer6 <br /> Emcon <br /> D-2 Rev 0,722/98 <br />