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Western Fuels 011 Acute Cd August 2008 <br />Program run on 09-22-2008 at 12:04:24 <br />RESULTS CALCULATED USING THE BINOMINAL METHOD <br />CONC. NUMBER NUMBER PERCENT BINOMIAL <br /> <br />--------- EXPOSED <br />----- DEAD DEAD PROB.(PERCENT) <br /> <br />100 ---------- <br />20 -------------- <br />1 --------------- <br />5.00 --------------------------- <br />0.0020 <br />75 20 1 5.00 0.0020 <br />50 20 0 0.00 LESS THAN 0.001 <br />25 20 1 5.00 0.0020 <br />12.5 20 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 />IF THE PROBIT SLOPE IS NEGATIVE, ENTER THE DATA AGAIN <br />USING THE NUMBER ALIVE INSTEAD OF THE NUMBER DEAD. <br />RESULTS CALCULATED USING THE PROBIT METHOD <br />-------------------------------------------------------------------------------- <br />GOODNESS OF FIT <br />ITERATIONS G H CHI-SQUARE PROBABILITY <br />-------------------------------------------------------------------------------- <br />4 6.392 1.000 1.936 0.586 <br />SLOPE _ .6820438 <br />95 PERCENT CONFIDENCE LIMITS = -1.042261 AND 2.406348 <br />LC50 = 27317.02 <br />95 PERCENT CONFIDENCE LIMITS = 282.9159 AND + INFINITY <br />LC1 = 10.60854 <br />95 PERCENT CONFIDENCE LIMITS = 0 AND 58.35646 <br />COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE.