If the data from a series of tests performed with the same toxicant, toxicant concentrations, and test species, were analyzed with hypothesis tests, precision could only be assessed by a qualitative comparison of the NOEC-LOEC intervals, with the understanding that maximum precision would be attained if all tests yielded the same NOEC-LOEC interval.
( ( If ( ( ( the data ) ( from ( ( a series ) ( of ( tests ( performed ( with ( ( ( ( ( ( ( the ( same toxicant ) ) , ) ( toxicant concentrations ) ) , ) and ) ( test species ) ) , ) ) ) ) ) ) ) ) ( were ( analyzed ( with ( hypothesis tests ) ) ) ) ) ) ( , ( precision ( ( ( could only ) ( be ( ( ( assessed ( by ( ( a ( qualitative comparison ) ) ( of ( the ( NOEC-LOEC intervals ) ) ) ) ) ) , ) ( with ( ( the understanding ) ( that ( ( maximum precision ) ( would ( be ( attained ( if ( ( all tests ) ( yielded ( the ( same ( NOEC-LOEC interval ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NP (DT the) (NNS data)) (PP (IN from) (NP (NP (DT a) (NN series)) (PP (IN of) (NP (NP (NNS tests)) (VP (VBN performed) (PP (IN with) (NP (NP (DT the) (JJ same) (NN toxicant)) (, ,) (NP (JJ toxicant) (NNS concentrations)) (, ,) (CC and) (NP (NN test) (NNS species)) (, ,))))))))) (VP (VBD were) (VP (VBN analyzed) (PP (IN with) (NP (JJ hypothesis) (NNS tests))))))) (, ,) (NP (NN precision)) (VP (MD could) (ADVP (RB only)) (VP (VB be) (VP (VBN assessed) (PP (IN by) (NP (NP (DT a) (JJ qualitative) (NN comparison)) (PP (IN of) (NP (DT the) (JJ NOEC-LOEC) (NNS intervals))))) (, ,) (PP (IN with) (NP (NP (DT the) (NN understanding)) (SBAR (IN that) (S (NP (JJ maximum) (NN precision)) (VP (MD would) (VP (VB be) (VP (VBN attained) (SBAR (IN if) (S (NP (DT all) (NNS tests)) (VP (VBD yielded) (NP (DT the) (JJ same) (JJ NOEC-LOEC) (NN interval))))))))))))))) (. .)))
They wanted to make sure they were getting the same results each time.
( They ( ( wanted ( to ( make ( sure ( they ( were ( ( getting ( the ( same results ) ) ) ( each time ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD wanted) (S (VP (TO to) (VP (VB make) (ADJP (JJ sure) (SBAR (S (NP (PRP they)) (VP (VBD were) (VP (VBG getting) (NP (DT the) (JJ same) (NNS results)) (NP (DT each) (NN time))))))))))) (. .)))