Identifying odometer fraud in used car market data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13510%2F17%3A43892888" target="_blank" >RIV/44555601:13510/17:43892888 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tranpol.2017.07.018" target="_blank" >http://dx.doi.org/10.1016/j.tranpol.2017.07.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tranpol.2017.07.018" target="_blank" >10.1016/j.tranpol.2017.07.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Identifying odometer fraud in used car market data

Popis výsledku v původním jazyce

This paper investigates the presence of odometer fraud in the used car market using a large dataset of car sale advertisements from the Czech Republic. The strategic aspects of sale decisions and the practice of rounding odometer readings, however, render the standard statistical tests for fabricated data invalid. I therefore develop and employ a modification of the last-digit test, which has been used to detect fraud in election data. Simulations using the data from advertisements and travel survey data from the United States support the validity of this test under alternative distributional assumptions. The results suggest that suspicious patterns are more prevalent in the segment of cars imported from abroad. I also show that this test can be used at the seller level, which may be of interest to authorities and market participants.

Název v anglickém jazyce

Identifying odometer fraud in used car market data

Popis výsledku anglicky

This paper investigates the presence of odometer fraud in the used car market using a large dataset of car sale advertisements from the Czech Republic. The strategic aspects of sale decisions and the practice of rounding odometer readings, however, render the standard statistical tests for fabricated data invalid. I therefore develop and employ a modification of the last-digit test, which has been used to detect fraud in election data. Simulations using the data from advertisements and travel survey data from the United States support the validity of this test under alternative distributional assumptions. The results suggest that suspicious patterns are more prevalent in the segment of cars imported from abroad. I also show that this test can be used at the seller level, which may be of interest to authorities and market participants.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

50202 - Applied Economics, Econometrics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Transport Policy

ISSN

0967-070X

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

November 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

10-23

Kód UT WoS článku

000418970300002

EID výsledku v databázi Scopus

2-s2.0-85027867830