Because a reduction in the I/S ratio means that changes in sales will be matched by a smaller change in inventories, a lower ratio also implies lower inventory volatility.
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(ROOT (S (SBAR (IN Because) (S (NP (NP (DT a) (NN reduction)) (PP (IN in) (NP (DT the) (NNP I/S) (NN ratio)))) (VP (VBZ means) (SBAR (IN that) (S (NP (NP (NNS changes)) (PP (IN in) (NP (NNS sales)))) (VP (MD will) (VP (VB be) (VP (VBN matched) (PP (IN by) (NP (NP (DT a) (JJR smaller) (NN change)) (PP (IN in) (NP (NNS inventories))))))))))))) (, ,) (NP (DT a) (JJR lower) (NN ratio)) (ADVP (RB also)) (VP (VBZ implies) (NP (JJR lower) (NN inventory) (NN volatility))) (. .)))
A lower I/S ratio results in higher inventory volatility and changes in sales will result in higher changes in inventories.
( ( ( A ( lower ( I/S ( ratio results ) ) ) ) ( in ( ( ( higher ( inventory volatility ) ) and ) ( changes ( in sales ) ) ) ) ) ( ( will ( result ( in ( ( higher changes ) ( in inventories ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJR lower) (NN I/S) (NN ratio) (NNS results)) (PP (IN in) (NP (NP (JJR higher) (NN inventory) (NN volatility)) (CC and) (NP (NP (NNS changes)) (PP (IN in) (NP (NNS sales))))))) (VP (MD will) (VP (VB result) (PP (IN in) (NP (NP (JJR higher) (NNS changes)) (PP (IN in) (NP (NNS inventories))))))) (. .)))