Laserfiche WebLink
d.magna-C18 SPE Column-11/20/02 <br />Program run on 11-22-2002 at 09:55:16 <br />RESULTS CALCULATED USING THE BINOMINAL METHOD <br />--------- <br />CONC. --------------- <br />NUMBER -------------- <br />NUMBER -------------- <br />PERCENT ---------------------------- <br />BINOMIAL <br /> <br />-- EXPOSED <br />-- <br />- <br />-- <br />- DEAD DEAD PROB.(PERCENT) <br />--- <br />---- <br />100 --- <br />--- <br />--- <br />20 -------------- <br />5 --------------- <br />25.00 --------------------------- <br />2.0695 <br />75 20 0 0.00 LESS THAN 0.001 <br />50 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 />WHEN THERE ARE LESS THAN TWO DIFFERENT CONCENTRATIONS AT <br />WHICH THE PERCENT DEAD IS BETWEEN 0 AND 100, THE PROBIT <br />METHOD CANNOT GIVE ANY STATISTICALLY SOUND RESULTS. <br />RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />