( ( The table ) ( below ( ( shows ( ( the ( sampling error ) ) ( expected ( for ( ( ( ( selected materials ) ( for ( a 150 ) ) ) and ) ( ( ( a ( 600 ( sample ( composition study ) ) ) ) , ) ( expressed ( in ( terms ( of ( ( sampling error ) ( as ( ( a percentage ) ( of ( ( the ( percent composition ) ) ( of ( each material ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN table)) (ADVP (RB below)) (VP (VBZ shows) (NP (NP (DT the) (VBG sampling) (NN error)) (VP (VBN expected) (PP (IN for) (NP (NP (NP (VBN selected) (NNS materials)) (PP (IN for) (NP (DT a) (CD 150)))) (CC and) (NP (NP (DT a) (CD 600) (NN sample) (NN composition) (NN study)) (, ,) (VP (VBN expressed) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (S (VP (VBG sampling) (NP (NN error)) (PP (IN as) (NP (NP (DT a) (NN percentage)) (PP (IN of) (NP (NP (DT the) (NN percent) (NN composition)) (PP (IN of) (NP (DT each) (NN material))))))))))))))))))) (. .)))
The table below shows the sampling error expected for selected materials for a 150 and a 600 sample composition study, expressed in terms of sampling error as a percentage of the percent composition of each material.
(ROOT (S (NP (DT The) (NN term) (NN percent) (NN composition)) (VP (VBZ means) (NP (DT the) (NN percentage)) (PP (IN by) (NP (NP (NN mass)) (PP (IN of) (NP (NP (DT each) (NN element)) (PP (IN in) (NP (DT a) (NN compound)))))))) (. .)))