Federal Department of Home Affairs FDHA Federal Statistical

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Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weighting issues Regional Workshop

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weighting issues Regional Workshop on Consumer Price Indices, Minsk 2019 1

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Objectives To discuss about

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Objectives To discuss about • Possible data sources for the weights • The weight reference period • The frequency of updating the weights Regional Workshop on Consumer Price Indices, Minsk 2019 2

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weights for • The

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weights for • The basket of goods and services • The regions • The outlets or outlet-type Expenditure-based weights are appropriate Regional Workshop on Consumer Price Indices, Minsk 2019 3

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Data sources for weights

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Data sources for weights Which one meets the requirement of the CPI ? - Should cover all private households - All types of consumption expenditures - Timeliness - If possible same classification - Reliability - Should cover a year Regional Workshop on Consumer Price Indices, Minsk 2019 4

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Data sources for weights

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Data sources for weights Household budget survey (HBS) National accounts Retail sales data Scanner data (Population census) Regional Workshop on Consumer Price Indices, Minsk 2019 5

Federal Department of Home Affairs FDHA Federal Statistical Office FSO HBS as data source

Federal Department of Home Affairs FDHA Federal Statistical Office FSO HBS as data source for weights Results HBS Households expenditure Quality control With external sources Exclusion of expenditures outside the scope of the CPI Watch out for tobacco, alcoolic beverage, durable goods Such as income tax, life insurance premium Price update (or not) Quality control of the weights Compared with previous year, with external sources Dissemination Regional Workshop on Consumer Price Indices, Minsk 2019 6

Federal Department of Home Affairs FDHA Federal Statistical Office FSO National accounts as data

Federal Department of Home Affairs FDHA Federal Statistical Office FSO National accounts as data source for weights - Scope : all households, incl. institutional - Definition of consumption: domestic versus national - Time-lag (but preliminary data allowed) - Level of details Regional Workshop on Consumer Price Indices, Minsk 2019 7

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Domestic versus national concept

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Domestic versus national concept Regional Workshop on Consumer Price Indices, Minsk 2019 8

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weight reference period -

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Weight reference period - Time to which the estimated weights relate - Should not be to distant from the price reference period - Price updating ? Regional Workshop on Consumer Price Indices, Minsk 2019 9

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Price updating : mechanism

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Price updating : mechanism EVET-2 t-2 HBS Weights Gewichte LIKDec Dez. T-1 t-1 CPI Konsum. Consumption exp. T- 2 t-2 ausgaben Price T-2 Preis t-2 X Expenditure Ausgaben Dez Dec t-1 T-1 Price update Preisbereinigung x Preis Price Okt Dec. t-1 T-1 ———— Menge t-2 T-2 Quantity Regional Workshop on Consumer Price Indices, Minsk 2019 Price Preis T-2 t-2 = Price T-1 Preis Dec. Okt t-1 X Quantity T-2 Menge t-2 10

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Price updating or not

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Price updating or not ? - The weights have to be as up to date as possible - Price elasticity - Volatility of certain product, such as fuels - No consensus Regional Workshop on Consumer Price Indices, Minsk 2019 11

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Frequency of updating the

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Frequency of updating the weights - Frequent update, at least one every five years - If significant economic changes, updating the weights annually and chaining Regional Workshop on Consumer Price Indices, Minsk 2019 12

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Questions / Discussions •

Federal Department of Home Affairs FDHA Federal Statistical Office FSO Questions / Discussions • What is the source of your CPI weights ? • How frequenty do you update the CPI weights ? • Do you price update the weights ? Regional Workshop on Consumer Price Indices, Minsk 2019 13