heteroskedasticity

Portuguese translation: heteroscedasticidade

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00:55 Sep 25, 2020
English to Portuguese translations [PRO]
Bus/Financial - Economics
Additional field(s): Business/Commerce (general), Economics, Finance (general), Investment / Securities, Mathematics & Statistics
English term or phrase: heteroskedasticity
Definition from Investopedia:
In statistics, heteroskedasticity (or heteroscedasticity) happens when the standard errors of a variable, monitored over a specific amount of time, are non-constant. With heteroskedasticity, the tell-tale sign upon visual inspection of the residual errors is that they will tend to fan out over time

Example sentence(s):
  • Most real world data will probably be heteroskedastic. However, one can still use ordinary least squares without correcting for heteroskedasticity because if the sample size is large enough, the variance of the least squares estimator may still be sufficiently small to obtain precise estimates. Methods for Detecting and Resolving...
  • Heteroskedasticity can also occur if there are subpopulation differences or other interaction effects (e.g. the effect of income on expenditures differs for whites and blacks). (Again, the problem arises from violation of the assumption that no such differences exist or have already been incorporated into the model.) Richard Williams, Univ. of Notre Dame
  • If heteroskedasticity does not cause bias or inconsistency in he OLS estimators, why did we introduce it as one of the Gauss-Markov assumptions? Hedibert
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Portuguese translation:heteroscedasticidade
Definition:
Um conjunto de variáveis aleatórias é heteroscedástico se houver sub-populações que têm diferentes variabilidades de outros.
Selected response from:

Matheus Chaud
Brazil
Grading comment
4 KudoZ points were awarded for this answer



Summary of translations provided
4 +6heteroscedasticidade
Matheus Chaud


  

Translations offered


1 hr   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +6
heteroscedasticidade


Definition from https://pt.qwe.wiki/wiki/Heteroscedastic:
Um conjunto de variáveis aleatórias é heteroscedástico se houver sub-populações que têm diferentes variabilidades de outros.

Example sentence(s):
  • Ensaios sobre heteroscedasticidade em modelos de efeitos fixos. - UFPE  

Explanation:


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Note added at 1 hr (2020-09-25 02:02:10 GMT)
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Mais de 16.000 ocorrências:
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Matheus Chaud
Brazil
Local time: 05:09
Native speaker of: Native in PortuguesePortuguese
PRO pts in category: 32

Votes in favor of/against selecting this as the best translation of the term asked
Yes  Fernando Barros
39 mins
  -> Obrigado, Fernando!

Yes  Regina Oliveira
46 mins
  -> Obrigado, Regina!

Yes  Teresa Borges: https://dicionario.priberam.org/heteroscedasticidade
5 hrs
  -> Obrigado, Teresa! É importante saber que a palavra já está dicionarizada, agradeço o envio do link.

Yes  Erlinda Kofazu
11 hrs
  -> Obrigado, Erlinda!

Yes  Sueli Astrini
3 days 13 hrs
  -> Obrigado, Sueli!

Yes  Bett
6 days
  -> Obrigado, Bett!
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