ABSTRACT
Theobjectofthischapteristoanalyseeitherpublishedindex numbersordatafromwhichindexnumbersmaybecomputed,and sotoillustratethetwo-situationtheoryofChapter2.Atthesame timethegroundispreparedforthelaterdevelopmentsofChapters 4and5onthetheoryandpracticeofrunsofindexnumbers.The importantproblemsinpracticehavetodowithrunsandthematerial assembledherecanbecalleduponlatertoillustratethem.
