Data quality, concepts and methodology: Industrial product price indexes, manufacturing
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(CANSIM Tables 329-0056 to 329-0068: 2002=100)
Introduction
Industry price indexes (See Catalogue no. 62-011-X for more complete set of index series) are presented in this publication to give an indication of factory gate price movement for those manufacturers who specialize in producing building materials.
Characteristics
General
These indexes measure changes in shipment selling prices of important commodities sold by major manufacturing establishments. The series calculated for industry indexes are classified under the 2002 North American Industry Classification System (NAICS) whereas those for commodity indexes are classified according to the Principal Commodity Group Aggregates (PCGA) classification.
Prices used
Prices are for shipments, net (discounts allowed) as of the middle of the month, (f.o.b. plant).
Adjustments to prices
Quality adjustments are made for changes in physical characteristics or terms of sale in order to arrive at estimates of pure price change. No adjustments are made for changes in sales taxes.
Weight base
Weights, which determine the relative importance of commodities within each index, were derived from the 2002 Input/Output tables.
Index formula
Price indexes are base-weighted.
Revisions
Generally, indexes are subject to revisions for six months.
Reference documents and further reading
For further information, contact Dissemination Unit at telephone: 613-951-4550, toll-free: 1-888-951-4550, fax: 613-951-3117, e-mail: ppd-info-dpp@statcan.gc.ca, Producer Prices Division, Statistics Canada, Ottawa, Ontario, K1A 0T6.
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