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estern Fuels Effluent 007 Fathead Acute May 2006 <br />gram run on 06-19-2006 at 16:48:27 <br />RESULTS CALCULATED USING THE BINOMINAL METHOD <br />---------- <br />CONC. --------------- <br />NUMBER ------------- <br />NUMBER --------------- <br />PERCENT --------------------------- <br />BINOMIAL <br /> EXPOSED DEAD DEAD PROB. (PERCENT) <br />--------- <br />---- <br />--------- <br />100 ---------------- <br />40 ------------- <br />1 --------------- <br />2.50 -------- <br />LESS ----- <br />- <br />THAN 0.001 <br />75 40 2 5.00 LESS THAN 0.001 <br />50 40 0 0.00 LESS THAN 0.001 <br />25 40 2 5.00 LESS THAN 0.001 <br />12.5 40 0 0.00 LESS THAN 0.001 <br />AT A CONFIDENCE LEVEL OF 95 PERCENT, THE BINOMIAL TEST <br />SHOWS THAT THE LC50 IS ABOVE 100 <br />THE USEFULNESS OF ANY LC50 CALCULATED FROM THIS SET OF DATA <br />IS QUESTIONABLE BECAUSE A CONCENTRATION-EFFECT RELATIONSHIP <br />HAS NOT BEEN DEMONSTRATED OVER A REASONABLE RANGE (e.g. <br /><37 TO>63 OF PERCENT DEAD <br />NEITHER THE APPROXIMATE LC50 CALCULATION NOR THE MOVING <br />AVERAGE METHOD CAN BE USED WITH THIS SET OF DATA. <br />EITHER THE HIGHEST CONCENTRATION KILLED LESS THAN 50 <br />PERCENT OR THE LOWEST KILLED MORE THAN 50 PERCENT. <br />THE PROBIT SLOPE IS NEGATIVE, ENTER THE DATA AGAIN <br />NG THE NUMBER ALIVE INSTEAD OF THE NUMBER DEAD. <br />RESULTS CALCULATED USING THE PROBIT METHOD <br /> GOODNESS OF FIT <br />ITERATIONS <br />----------- G <br />------------------- H <br />------- CHI-SQUARE PROBABILITY <br />-------------------- <br /> <br />5 <br />8.314 ----------- <br />1.000 ---- <br />-------- <br />4.240 0.237 <br />SLOPE _ .4217878 <br />95 PERCENT CONFIDENCE LIMITS = -.794408 AND 1.637984 <br />LC50 = 2010823 <br />95 PERCENT CONFIDENCE LIMITS = 700.1675 AND + INFINITY <br />LC1 = 6.138206 <br />95 PERCENT CONFIDENCE LIMITS = 0 AND 47.03514 <br />COMPARE RES ULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE. <br /> <br />~% <br />