In general, six elements appear  purpose, type of data collected, method of data collection, design, method of data analysis, and reporting.
( ( In general ) ( , ( ( six elements ) ( ( appear ( ( purpose , ) ( type ( of ( ( ( ( ( ( ( ( ( ( data collected ) , ) ( method ( of ( data collection ) ) ) ) , ) design ) , ) ( method ( of ( data analysis ) ) ) ) , ) and ) reporting ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN general))) (, ,) (NP (CD six) (NNS elements)) (VP (VBP appear) (NP (NP (NN purpose)) (, ,) (NP (NP (NN type)) (PP (IN of) (NP (NP (NP (NNS data)) (VP (VBN collected))) (, ,) (NP (NP (NN method)) (PP (IN of) (NP (NN data) (NN collection)))) (, ,) (NP (NN design)) (, ,) (NP (NP (NN method)) (PP (IN of) (NP (NN data) (NN analysis)))) (, ,) (CC and) (NP (NN reporting))))))) (. .)))
Purpose is not one of the six elements listed here.
( Purpose ( ( ( is not ) ( one ( of ( ( the ( six elements ) ) ( listed here ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Purpose)) (VP (VBZ is) (RB not) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (CD six) (NNS elements)) (VP (VBN listed) (ADVP (RB here))))))) (. .)))