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How Should Relative Changes be Measured?

Törnqvist, Leo, Vartia, Pentti, Vartia, Yrjö O.·1985·The American Statistician

Abstract

Various indicators of relative change (or difference) are considered. It is shown that the log change defined by log e (y/x) is the only symmetric, additive, and normed indicator of relative change. It is proposed that the values of the log change in percent, 100 log e (y/x), be denoted by the symbol L%, the log percentage. It is hoped that the symmetric and additive log percentages will gradually replace the ordinary asymmetric and nonadditive percentages.

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Metadata

Authors
Törnqvist, L., Vartia, P., & Vartia, Y. O.
Venue
The American Statistician
Published
1985-02
Volume
39
Issue
1
Pages
43-46
ISSN
  • 0003-1305 (ISSN-L)
  • 1537-2731
OpenAlex
W2038895391
Cited by
466
References
0
FWCI
2.99
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: How Should Relative Changes be Measured? https://app.cochat.ai/papers/10.1080/00031305.1985.10479385
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Törnqvist, L., Vartia, P., & Vartia, Y. O. (1985). How Should Relative Changes be Measured? The American Statistician. https://doi.org/10.1080/00031305.1985.10479385

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