This is the second in a sequence of volumes about the official statistics measures of inflation and productivity for nations. The volume focus is seasonality. The usual assumption in the index number literature is that the periods are entire years. In actual applications, imputation or deletion of seasonal products is common. The papers in this volume demonstrate better ways of handling seasonal products in price indexes.

This is the sixth in a sequence of volumes about the official statistics measures of inflation and productivity for nations. Part I papers deal with productivity measures and decompositions. Part II papers focus on the properties of alternative index number formulas for price and productivity measurement. Unlike the other volume in this series, this volume is intended for specialists.