‘Laspeyres-type index’ means the price index that measures the average change in prices from the price reference period to a comparison period using expenditure shares from a period prior to the price reference period, and where the expenditure shares are adjusted to reflect the prices of the price reference period.
Ciallaíonn “innéacs de chineál Laspeyres” an t-innéacs praghsanna lena dtomhaistear an t-athrú meánach ar phraghsanna idir tréimhse thagartha na bpraghsanna agus tréimhse chomparáide trí leas a bhaint as scaireanna caiteachais ó thréimhse éigin roimh an tréimhse tagartha, agus sa chás ina ndéantar na scaireanna caiteachais a choigeartú chun léiriú a thabhairt ar phraghsanna sa tréimhse tagartha.