REMEDIES FOR PROBLEMS ASSOCIATED WITH NON- MONOTONIC DATA Better concentration series selectionBetter concentration series selection Increase number of replicatesIncrease number of replicates % MSD limits (NOEC's)% MSD limits (NOEC's) Concentration-response curve criterionConcentration-response curve criterion Use of more robust parametric models Bailer and Oris, 1997 Kerr and Meador, 1996 Baird et al., 1996Use of more robust parametric models Bailer and Oris, 1997 Kerr and Meador, 1996 Baird et al., 1996
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