Download Benchmarking, Temporal Distribution, and Reconciliation by Estela Bee Dagum PDF

By Estela Bee Dagum

In smooth economies, time sequence play a vital function in any respect degrees of task. they're utilized by choice makers to plot for a greater destiny, via governments to advertise prosperity, by means of relevant banks to manage inflation, by way of unions to cut price for larger wages, via clinic, university forums, brands, developers, transportation businesses, and by means of shoppers in general.

A universal false impression is that point sequence facts originate from the direct and simple compilations of survey info, censuses, and administrative documents. to the contrary, ahead of e-book time sequence are topic to statistical changes meant to facilitate research, raise potency, decrease bias, change lacking values, right mistakes, and fulfill cross-sectional additivity constraints. probably the most universal alterations are benchmarking, interpolation, temporal distribution, calendarization, and reconciliation.

This publication discusses the statistical equipment quite often utilized for such alterations, starting from advert hoc techniques to regression-based types. The latter are emphasised, due to their readability, ease of software, and greater effects. each one subject is illustrated with many genuine case examples. which will facilitate figuring out in their houses and barriers of the equipment mentioned, a true information instance, the Canada overall Retail exchange sequence, is during the book.

This e-book brings jointly the scattered literature on those issues and offers them utilizing a constant notation and a unifying view. The booklet will advertise larger methods via huge manufacturers of time sequence, e.g. statistical organisations and imperative banks. moreover, understanding what changes are made to the information and what strategy is used and the way they have an effect on the rage, the company cycles and seasonality of the sequence, will allow clients to accomplish greater modeling, prediction, research and planning.

This publication will end up important to graduate scholars and ultimate yr undergraduate scholars of time sequence and econometrics, in addition to researchers and practitioners in executive associations and enterprise.

From the reviews:

"It is a wonderful reference e-book for individuals operating during this area." B. Abraham for brief publication experiences of the ISI, December 2006

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Example text

2 displays the logistic trend of Eq. 13) with parameters and ; its inflection point occurs at . The figure also shows the modified logistic of Eq. 14) with parameters , , and . 2 moves the inflection point to , A good example of logistic trend is given by the proportion of households with television sets, which grew slowly when television was introduced in the 1950s, then boomed in the 1960s, and eventually levelled off. Another example is the participation rate of women to the labour force. In the first part of the 20-th century women had a relatively low participation rate to the 24 The Components of Time Series labour force; working women consisted mainly of young women, teachers and nurses.

G. Income Tax, Superannuation and Employment Insurance premiums, the daily pattern is defined over two weeks instead of one. These variables are related to pay days and Payroll Deductions, which typically take place every second week. Appendix E provides regressors for weekly and bi-weekly daily patterns. 6 of Chapter 9 discusses the calendarization of such data. 25 for the leap and non-leap years respectively. 7 The Trading-Day Component 41 Many goods and services are affected by daily patterns of activity, which entail higher costs for producers, namely through the need of higher inventories, equipment and staff on certain days of the week.

1 for Jan. 1 1900, 2 for Jan. 2 1900, etc. 26) may be used as such for daily series, to capture the excess of activity due to Easter in March and April. 27b) where t stands for March and for April. The regressors of Eq. 27) measure the excess activity associated with Easter, but do not assign it to any of the two months. One practice is to assign the full Easter effect to April because Easter occurs in April most of the time. This is achieved by redefining the regressor of April in Eq. 27b) as .

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