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CVs

Spanish translation: CV / coeficiente de variación

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:CV
Spanish translation:CV / coeficiente de variación
Entered by: Charles Davis
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01:42 Oct 2, 2011
English to Spanish translations [PRO]
Science - Science (general)
English term or phrase: CVs
¿A qué se refiere CVs en esta oración?

Optimize optical alignment for certain assays demanding high accuracy "CVs" and prevent long-term alignment drift

Gracias por su ayuda
tradeesse
Local time: 10:35
CVs
Explanation:
Inglés: Coefficients of Variation (o Variance)
Español: Coeficientes (a veces Cocientes) de Variación.

"In probability theory and statistics, the coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution. It is also known as unitized risk or the variation coefficient."
http://en.wikipedia.org/wiki/Coefficient_of_variation

"En estadística el coeficiente de variación (de Pearson), es una medida de dispersión útil para comparar dispersiones a escalas distintas pues es una medida invariante ante cambios de escala. Sirve para comparar variables que están a distintas escalas pero que están correlacionadas estadísticamente y sustantivamente con un factor en común."
http://es.wikipedia.org/wiki/Coeficiente_de_variación

--------------------------------------------------
Note added at 27 mins (2011-10-02 02:10:08 GMT)
--------------------------------------------------

"The coefficient of variance (CV) of the end-point assay was found to be below 10 % (sensitivity limit of ABTS assay 5 nU/ml, Fig. 3)."
http://digital.csic.es/bitstream/10261/9639/1/postprint-CCHT...

"The coefficient of variation (CV) in the Cp for all concentrations tested was ≤ 2.3% (Table 4), verifying a high degree of assay precision across the entire range of concentrations tested."
http://www.virologyj.com/content/7/1/295

"Los resultados individuales fueron transformados a % del valor de consenso (tablas 2 a 4) y con ellos se calcularon la media y 3 CVs (coeficientes de variación): CV global (usando todos los datos). CV interdía (usando las 8 medias de cada pareja de sueros parientes) y CV intradía (media de los 8 CVs de cada pareja de sueros pariente)."
http://bases.bireme.br/cgi-bin/wxislind.exe/iah/online/?Isis...

--------------------------------------------------
Note added at 56 mins (2011-10-02 02:38:35 GMT)
--------------------------------------------------

En algunas fuentes, como la que he citado, se emplea "CVs" como abreviatura de "coeficientes de variación", en plural. Sin embargo, es mucho más frecuente el empleo de "CV" en plural como en singular:

"Se calcularon los coeficientes de variación (CV) inter e intraensayo realizando medidas consecutivas sobre la misma placa."
http://www.biologiaosea.com.ar/files/seminarios/sem Rx.pdf

"En los dos años de estudio, los coeficientes de variación (CV) oscilaron entre 10 y 46% para el largo y número de panoja, respectivamente."
http://www.scielo.cl/scielo.php?pid=S0718-16202007000200007&...

"Los valores de urea de las muestras mensuales de leche permitieron establecer los promedios, desviaciones estándar y coeficientes de variación (CV)"
http://books.google.es/books?id=ESMwtcjVUYEC&pg=PA167&lpg=PA...

Se escribe normalmente "los CV". Así pues, quiero cambiar mi respuesta: por CVs, léase CV.

--------------------------------------------------
Note added at 1 day5 hrs (2011-10-03 07:17:35 GMT)
--------------------------------------------------

"High accuracy CVs" es sinónimo de "highly accurate CVs". Esta expresión se encuentra en otros lugares, donde se refiere al "coefficient of variation":

"Here we do not assess the coefficient of variation (CV) in the intensities of these identified features because the LC injection was performed manually and is likely to result in significant variation. [...] Although the successful implementation of these improvements will enhance the ability to determine accurate CVs for peptide ion intensity, we note that the reproducibility studies described in the text are aimed at determining the ability to align two different datasets (necessary for comparative mapping studies)."
Valentine et al., "Toward Plasma Proteome Profiling with Ion Mobility-Mass Spectrometry", nota 88.
http://www.indiana.edu/~clemmer/Publications/pub 119.pdf

"They based their conclusion of lower variability associated with DNA extraction (i.e., replication) partly on a low CV for threshold cycle of unknown samples. In our study, threshold cycle data were discrete (i.e., discontinuous), thus not following a normal distribution or allowing an accurate CV to be determined. [...]
Evaluation of the real-time PCR assay. Replication and duplication CV averaged 21.2 and 18.6% across sample types, respectively (data not shown). [...]
The determination of unknown copies was constant over the entire range of standards (Fig. 4), and the best-fit curve from the nonlinear regression had a CV of 1.5%."
Sylvester et al., "Development of an Assay to Quantify Rumen Ciliate Protozoal Biomass in Cows Using Real-Time PCR"
http://jn.nutrition.org/content/134/12/3378.full

El coeficiente de variación se expresa habitualmente como porcentaje:
"The coefficient of variation expresses the standard deviation as a percentage of the sample mean."
http://mathcentral.uregina.ca/QQ/database/QQ.09.05/jan1.html
Selected response from:

Charles Davis
Spain
Local time: 17:35
Grading comment
Gracias a todos.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +3CVs
Charles Davis


Discussion entries: 6





  

Answers


23 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +3
cvs
CVs


Explanation:
Inglés: Coefficients of Variation (o Variance)
Español: Coeficientes (a veces Cocientes) de Variación.

"In probability theory and statistics, the coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution. It is also known as unitized risk or the variation coefficient."
http://en.wikipedia.org/wiki/Coefficient_of_variation

"En estadística el coeficiente de variación (de Pearson), es una medida de dispersión útil para comparar dispersiones a escalas distintas pues es una medida invariante ante cambios de escala. Sirve para comparar variables que están a distintas escalas pero que están correlacionadas estadísticamente y sustantivamente con un factor en común."
http://es.wikipedia.org/wiki/Coeficiente_de_variación

--------------------------------------------------
Note added at 27 mins (2011-10-02 02:10:08 GMT)
--------------------------------------------------

"The coefficient of variance (CV) of the end-point assay was found to be below 10 % (sensitivity limit of ABTS assay 5 nU/ml, Fig. 3)."
http://digital.csic.es/bitstream/10261/9639/1/postprint-CCHT...

"The coefficient of variation (CV) in the Cp for all concentrations tested was ≤ 2.3% (Table 4), verifying a high degree of assay precision across the entire range of concentrations tested."
http://www.virologyj.com/content/7/1/295

"Los resultados individuales fueron transformados a % del valor de consenso (tablas 2 a 4) y con ellos se calcularon la media y 3 CVs (coeficientes de variación): CV global (usando todos los datos). CV interdía (usando las 8 medias de cada pareja de sueros parientes) y CV intradía (media de los 8 CVs de cada pareja de sueros pariente)."
http://bases.bireme.br/cgi-bin/wxislind.exe/iah/online/?Isis...

--------------------------------------------------
Note added at 56 mins (2011-10-02 02:38:35 GMT)
--------------------------------------------------

En algunas fuentes, como la que he citado, se emplea "CVs" como abreviatura de "coeficientes de variación", en plural. Sin embargo, es mucho más frecuente el empleo de "CV" en plural como en singular:

"Se calcularon los coeficientes de variación (CV) inter e intraensayo realizando medidas consecutivas sobre la misma placa."
http://www.biologiaosea.com.ar/files/seminarios/sem Rx.pdf

"En los dos años de estudio, los coeficientes de variación (CV) oscilaron entre 10 y 46% para el largo y número de panoja, respectivamente."
http://www.scielo.cl/scielo.php?pid=S0718-16202007000200007&...

"Los valores de urea de las muestras mensuales de leche permitieron establecer los promedios, desviaciones estándar y coeficientes de variación (CV)"
http://books.google.es/books?id=ESMwtcjVUYEC&pg=PA167&lpg=PA...

Se escribe normalmente "los CV". Así pues, quiero cambiar mi respuesta: por CVs, léase CV.

--------------------------------------------------
Note added at 1 day5 hrs (2011-10-03 07:17:35 GMT)
--------------------------------------------------

"High accuracy CVs" es sinónimo de "highly accurate CVs". Esta expresión se encuentra en otros lugares, donde se refiere al "coefficient of variation":

"Here we do not assess the coefficient of variation (CV) in the intensities of these identified features because the LC injection was performed manually and is likely to result in significant variation. [...] Although the successful implementation of these improvements will enhance the ability to determine accurate CVs for peptide ion intensity, we note that the reproducibility studies described in the text are aimed at determining the ability to align two different datasets (necessary for comparative mapping studies)."
Valentine et al., "Toward Plasma Proteome Profiling with Ion Mobility-Mass Spectrometry", nota 88.
http://www.indiana.edu/~clemmer/Publications/pub 119.pdf

"They based their conclusion of lower variability associated with DNA extraction (i.e., replication) partly on a low CV for threshold cycle of unknown samples. In our study, threshold cycle data were discrete (i.e., discontinuous), thus not following a normal distribution or allowing an accurate CV to be determined. [...]
Evaluation of the real-time PCR assay. Replication and duplication CV averaged 21.2 and 18.6% across sample types, respectively (data not shown). [...]
The determination of unknown copies was constant over the entire range of standards (Fig. 4), and the best-fit curve from the nonlinear regression had a CV of 1.5%."
Sylvester et al., "Development of an Assay to Quantify Rumen Ciliate Protozoal Biomass in Cows Using Real-Time PCR"
http://jn.nutrition.org/content/134/12/3378.full

El coeficiente de variación se expresa habitualmente como porcentaje:
"The coefficient of variation expresses the standard deviation as a percentage of the sample mean."
http://mathcentral.uregina.ca/QQ/database/QQ.09.05/jan1.html

Charles Davis
Spain
Local time: 17:35
Native speaker of: Native in EnglishEnglish
PRO pts in category: 16
Grading comment
Gracias a todos.

Peer comments on this answer (and responses from the answerer)
agree  Graciela Rodríguez
8 hrs
  -> ¡Gracias, Graciela!

neutral  M. C. Filgueira: No, son son 2 cosas distintas. La exactitud (accuracy) es el grado de concordancia entre el valor determinado de una variable y el verdadero. La precisión (precision) es el grado de concordancia entre los valores de una serie de mediciones de una variable
11 hrs
  -> Yo creo que el grado de probabilidad es muy alto // La precisión de un método es "the accuracy of an analytical method" (así lo expresa la FDA, p.ej.). "High accuracy CVs" no está muy bien dicho, pero sí, creo que se refiere a coef. of var. ¡Saludos!

agree  eski: Correction noted: eski :))
17 hrs
  -> ¡Gracias y saludos, eski! :)

agree  Silvina P.
21 hrs
  -> ¡Gracias, Silvina!
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Changes made by editors
Oct 7, 2011 - Changes made by Charles Davis:
Created KOG entryKudoZ term » KOG term


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