Der Salzhandel, die Salinen und Salzbergwerke Württembergs im 19. Jahrhundert

Einführung in die Volkswirtschaftslehre

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Monograph

Identifikator:: 1023136384

URN:: urn:nbn:de:zbw-retromon-39354

Document type:: Monograph

Author:: Neumann, Paul

Title:: Der Salzhandel, die Salinen und Salzbergwerke Württembergs im 19. Jahrhundert

Place of publication:: Tübingen

Publisher:: Druck von H. Laupp jr.

Year of publication:: 1912

Scope:: 1 Online-Ressource (III, 175 Seiten)

Digitisation:: 2018

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: II. Abschnitt. Die einzelnen Salinen und Salzbergwerke

Collection:: Economics Books

106 VALUATION, DEPRECIATION AND THE RATE-BASE service plant, and to the difficulty of determining the expect- ancy of those articles which have already been in use for some time, it is nevertheless important that the whole ques- tion be fully considered in order that a framework may be constructed into which the best data furnished by experience can be fitted. The non-agreement of actual life of individual items with their probable life and the extent to which this lack of agree- ment should be taken into account in estimating present worth and in estimating replacement requirements, in line with this thought, has been studied on various assumptions with inter- esting results. These will be briefly referred to, and the re- sulting tables are presented for use until, in the light of larger experience, they can be replaced with better ones. Assumptions Relating to Departure of Actual from Probable Life. — Unfortunately there are no records available from which absolutely dependable tables of expectancy could be prepared for each class of perishable articles in use in connection with public service properties, such as have been prepared by actu- aries for human beings. Any assumption in this regard is more or less conjecture. Nevertheless, it is interesting to note what the expectancy would be at various ages, if certain definite reasonable assumptions are made. When any large number of articles which have the same probable life, as, for example, ten years, is under consideration, there will be as many service years in the aggregate, represented by the failures to reach the probable life term of ten years, as there will be service years represented by those articles which outlast the ten-year term. It may also be accepted as a cer- tainty that there will be a greater number of articles per year to go out of use in the years just preceding and just following the term limit than at any other time. This suggests conform- ity with the law of probabilities. All articles in a group having a ten-year probable life might fail (a) exactly at the end of ten years, but this is highly improb- able. The individual articles might fail (0) at a uniform rate

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