2008-10-22_REPORT - C1981008 (3)

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estern Fuels 011 Accelerated #2 Oct. 2008 r ogram run on 10-13-2008 at 09:57:19 *-' RESULTS CALCULATED USING THE BINOMINAL METHOD CONC. NUMBER NUMBER PERCENT BINOMIAL --------- EXPOSED --------- - DEAD DEAD PROB.(PERCENT) 100 - ---- 40 -------------- 5 --------------- 12.50 ---------------=----------- LESS THAN 0.001 75 40 6 15.00 LESS THAN 0.001 50 40 4 10.00 LESS THAN 0.001 25 40 1 2.50 LESS THAN 0.001 12.5 40 1 2.50 LESS THAN 0.001 AT A CONFIDENCE LEVEL OF 95 PERCENT, THE BINOMIAL TEST SHOWS THAT THE LC50 IS ABOVE 100 THE USEFULNESS OF ANY LC50 CALCULATED FROM THIS SET OF DATA IS QUESTIONABLE BECAUSE A CONCENTRATION-EFFECT RELATIONSHIP HAS NOT BEEN DEMONSTRATED OVER A REASONABLE RANGE (e.g. <3.7 • TO>63 OF PERCENT DEAD NEITHER THE APPROXIMATE LC50 CALCULATION NOR THE MOVING AVERAGE METHOD CAN BE USED WITH THIS SET OF DATA. EITHER THE HIGHEST CONCENTRATION KILLED LESS THAN 50 PERCENT OR THE LOWEST KILLED MORE THAN 50 PERCENT. IF THE PROBIT SLOPE IS NEGATIVE, ENTER THE DATA AGAIN USING THE NUMBER ALIVE INSTEAD OF THE NUMBER DEAD. RESULTS CALCULATED USING THE PROBIT METHOD -------------------------------------------------------------------------------- GOODNESS OF FIT ITERATIONS G H CHI-SQUARE PROBABILITY ----------------------------------------------------------------7--------------- 3 0.678 1.000 1.021 0.796 SLOPE .= 1.130801 95 PERCENT CONFIDENCE LIMITS = .1998259 AND 2.061775 LC50 = 806.113 95 PERCENT CONFIDENCE LIMITS = 225.718 AND 2.293287E+08 LC1 = 7.066123 95 PERCENT CONFIDENCE LIMITS = 4.540339E-04 AND 19.36439 COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE REASONABLE.