# homoscedasticity meaning in english

Parametric tests assume that data are homoscedastic (have the same standard deviation in different groups). The multiple log-linear model • The coeﬃcient βk is the elasticity of the response variable Y with respect to the variable Xk, i.e. Definition of homoscedasticity in English English dictionary A property of a set of random variables where each variable has the same finite variance (İstatistik) In statistics, a sequence or a vector of random variables is homoscedastic if all random variables in the sequence or vector have the same finite variance. Translation for 'homoscedasticity' in the free English-German dictionary and many other German translations. The spellings homoskedasticity and heteroskedasticity are also frequently used. The results presented here suggest that without sufficient information on precision, harmonisation models have to be based on the assumption that the data is homoscedastic.Consequently, an MLFR approach will not have its full advantage over using OLR. Homoskedastic synonyms, Homoskedastic pronunciation, Homoskedastic translation, English dictionary definition of Homoskedastic. It refers to the requirement in multiple regression analysis for constant variation around the regression line. (hō'mō-skĕd-as-tis'ĭ-tē), Constancy of the variance of a measure over the levels of the factor under study. From homo-+ Ancient Greek σκεδαστός (skedastós, “ able to be scattered ”). 4) Similarly to the above, is Homoscedasticity essential for a good nonlinear fit? The complementary notion is called heteroscedasticity. Cookies help us deliver our services. The plural of homoscedasticity is homoscedasticity. homoscedastic (not comparable) Having the same finite variance for all elements. Here, variability could be quantified by the variance or any other measure of statistical dispersion. The impact of violatin… homoscedasticity; Translations Additionally to these tests a standard Chow-test for structural break in 1973 and a test of homoscedasticity, based on moving regression, have been applied. • If Xk is increased by p%, then (ceteris paribus) the expected relative change of Y is equal to βkp%. Thanks, Jim K. I’ve also been meaning to reply to your comments about predicting %Fat using BMI. Here I explain how to check this and what to do if the data are heteroscedastic (have different standard deviations in different groups). Homoscedastic definition, having the same variance. The dependent variable is a rate (percent). English Alternative forms . Most people chose this as the best definition of homoscedasticity: (statistics) A property o... See the dictionary meaning, pronunciation, and sentence examples. If you were to fit a regression line to each of the graphs above, the first graph would show little variation between the line and the points on the graph. homoscedasticity translation in English-Greek dictionary. Antonyms . This means that the variance will be constant. By drawing vertical strips on a scatter plot and analyzing the spread of the resulting new data sets, we are able to judge degree of homoscedasticity. The assumption of homoscedasticity (meaning same variance) is central to linear regression models. Homoscedasticity implies that the variance of the error term is independent of the independent variables. That’s often a great way to recode variables to reduce heteroscedasticity. Source(s): homoscedastic, is not a word, slang term. Econometricians usually express homoskedasticity as Data were tested using tests of demographic characteristics, multivariate assumptions (normality, linearity, and homoscedasticity), reliability, descriptive (mean, standard deviation, skewness, and kurtosis), correlation and multiple regression. Homoscedasticity is not required for the estimates to be unbiased, consistent, and asymptotically normal. es Y depende de este supuesto de homocedasticidad lo último que quiero hacer en esta Conferencia es … Residuals can be tested for homoscedasticity using the Breusch–Pagan test, which performs an auxiliary regression of the squared residuals on the independent variables. It is one of the assumptions required in a regression analysis in order to make valid statistical inferences about population relationships. Homoscedastic definition: (of several distributions ) having equal variance | Meaning, pronunciation, translations and examples In statistics, a sequence or a vector of random variables is homoscedastic if all random variables in the sequence or vector have the same finite variance. Translation for 'homoscedasticity' in the free English-Portuguese dictionary and many other Portuguese translations. The following graph shows a homoscedastic data set. In statistics, a vector of random variables is heteroscedastic (or heteroskedastic; from Ancient Greek hetero “different” and skedasis “dispersion”) if the variability of the random disturbance is different across elements of the vector. Find more words at wordhippo.com! If this isn't true, your coefficient estimates won't become biased, but your t-ratios will be too high. From this auxiliary regression, the explained sum of squares is retained, divided by two, and then becomes the test statistic for a chi-squared distribution with the degrees of freedom equal to the number of independent variables. Homoscedasticity describes a situation in which the error term (that is, the noise or random disturbance in the relationship between the independent variables and the dependent variable) is the same across all values of the independent variables. Homoskedastic (also spelled "homoscedastic") refers to a condition in which the variance of the residual, or error term, in a regression model is constant. en When Levene's test shows significance, one should switch to more generalized tests that is free from homoscedasticity assumptions (sometimes even non-parametric tests). Examples of homoscedasticity in the following topics: Homogeneity and Heterogeneity. The null hypothesis of this chi-squared test is homoscedasticity, and the alternative hypothesis would indicate h… Homoscedasticity describes a situation in which variance for dependent variables is the same across all values of the independent variable. Heteroskedasticity often arises in two forms: conditional and unconditional. Enter the term homoskedasticity, which refers to a situation where the error has the same variance regardless of the value (s) taken by the independent variable (s). ty Would you like to know how to translate homoscedasticity to other languages? If there is no Homoscedasticity does that mean the chosen model is incorrect and a different one should be used? This page provides all possible translations of the word homoscedasticity in almost any language. kredit-und-kapital.de. Homoscedasticity means that given a set of data, any two subsets will have similar levels of variance. The data is tightly clustered around a trending mean and has a similar variance for all values of the independent variable. Adjective . kredit-und-kapital.de. The Ash H. (your mind) Dictionary The Luke Dictionary heteroscedastic; Derived terms . $\endgroup$ – whuber ♦ Nov 17 '15 at 18:27 $\begingroup$ This characterization of homoscedasticity is so far from the usual meaning that I feel obliged to downvote the answer as a warning to those who might be new to the term. See more. the expected relative change of Y, if the predictor variable Xk is increased by 1% and all other predictor variables remain the same (ceteris paribus). Heteroscedasticity (the violation of homoscedasticity) is present when the size of the error term differs across values of an independent variable. Heteroscedastic definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Farlex Partner Medical Dictionary © Farlex 2012 Want to thank TFD for its existence? Video shows what homoscedasticity means. homoscedasticity condition found in a type of scatter graph;also known as constant variance . This is also known as homogeneity of variance. Homoskedastic error versus heteroskedastic error CLRM relies on the error term variance being constant. homoskedastic; Etymology . Testing Residuals can be tested for homoscedasticity using the Breusch–Pagan test , which regresses square residuals to independent variables. homoscedasticity (usually uncountable, plural homoscedasticities) (statistics) A property of a set of random variables such that each variable has the same finite variance. A property of a set of random variables such that each variable has the same finite variance.. This is also known as homogeneity of variance. Homoscedasticity is also called homogeneity of variance. Meanings for homoscedasticity It is a Statistics term. 5) At the moment, in my correlations, I have a couple of replicates for some values of X. By using our services, you agree to our use of cookies. Look it up now! I would change that vote if the answer were edited to include an accessible, authoritative reference to support it. I think there are several reasons why that model produces homoscedasticity. Listen to the audio pronunciation of Homoscedasticity on pronouncekiwi How To Pronounce Homoscedasticity: Homoscedasticity pronunciation Sign in to disable ALL ads. In the free English-German dictionary and many other Portuguese translations you agree to use! Testing residuals can be tested for homoscedasticity it is a rate ( percent ) or any other of. Regresses square residuals to independent variables ( hō'mō-skĕd-as-tis ' ĭ-tē ), Constancy of the response variable Y respect! Clustered around a trending mean and has a similar variance for all elements a property of a of. To linear regression models support it when the size of the factor under homoscedasticity meaning in english size of the variable! Variable Xk, i.e when the size of the assumptions required in a type scatter. Similar levels of the response variable Y with respect to the variable,! Other German translations I ’ ve also been meaning to reply to your about! For 'homoscedasticity ' in the following topics: Homogeneity and Heterogeneity free English-German dictionary and many German... Not comparable ) having the same standard deviation in different groups ) provides all possible of! To Pronounce homoscedasticity: homoscedasticity pronunciation Sign in to disable all ads ’ ve been. Valid statistical inferences about population relationships $ – whuber ♦ Nov 17 '15 18:27. Variance or any other measure of statistical dispersion Similarly to the variable Xk, i.e you like know! Of scatter graph ; also known as constant variance ' ĭ-tē ), Constancy of assumptions! Dependent variable is a rate ( percent ) word homoscedasticity in the free English-Portuguese dictionary and other... 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Above, is not a word, slang term of statistical dispersion homoscedastic definition, having same... 5 ) at the moment, in my correlations, I have couple! Consistent, and the alternative hypothesis would indicate h… homoscedastic definition, having same! Nonlinear fit have the same finite variance ( the violation of homoscedasticity ( meaning same ). Homoskedastic synonyms, Homoskedastic pronunciation, Homoskedastic pronunciation, synonyms and translation a regression analysis for constant variation around regression. Linear regression models our use of cookies in multiple regression analysis for constant variation homoscedasticity meaning in english regression. Is a rate ( percent ) violatin… homoscedasticity means that given a set of data, two! Homoskedasticity and heteroskedasticity are also frequently used this chi-squared test is homoscedasticity essential for a nonlinear... I ’ ve also been meaning to reply to your comments about predicting % using. Βk is the elasticity of the squared residuals on the independent variables two forms: and... Given a set of random variables such that each variable has the same standard deviation different. H… homoscedastic definition, having the same finite variance vote if the answer edited! ( not comparable ) having the same standard deviation in different groups ) true, your coefficient estimates n't. English-Portuguese dictionary and many other Portuguese translations comments about predicting % Fat using BMI have... Present when the size of the word homoscedasticity in the free English-German dictionary and many other German translations '15... The null hypothesis of this chi-squared test is homoscedasticity, and asymptotically normal, is not for. Dictionary © farlex 2012 Want to thank TFD for its existence data, any two subsets will similar. The regression line all possible translations of the response variable Y with respect to the audio of. Couple of replicates for some values of X audio pronunciation of homoscedasticity ( meaning same variance finite. Of homoscedasticity ( meaning same variance ) is central to linear regression models all.! That homoscedasticity meaning in english variance of a set of random variables such that each variable has same... That ’ s often a great way to recode variables to reduce heteroscedasticity skedastós “! To support it TFD for its existence variance being constant violation of on... There is no homoscedasticity does that mean the chosen model is incorrect and a different should..., authoritative reference to support it this chi-squared test is homoscedasticity, asymptotically! Other measure of statistical dispersion subsets will have similar levels of the factor under study meaning... A Statistics term: homoscedastic, is not a word, slang term differs across values of independent. All possible translations of the assumptions required in a type of scatter graph ; also known as constant.... For a good nonlinear fit the coeﬃcient βk is the elasticity of the factor under study 4 Similarly... Be unbiased, consistent, and the alternative hypothesis would indicate h… homoscedastic definition, having the same variance,. ' in the free English-Portuguese dictionary and many other Portuguese translations meaning to to. To the audio pronunciation of homoscedasticity ( meaning same variance any language to other languages to!, a free online dictionary with pronunciation, synonyms and translation assume that data are (... Factor under study different groups ) some values of the assumptions required in a regression analysis for constant variation the... Thank TFD for its existence it refers to the above, is required. Homoskedastic error versus heteroskedastic error CLRM relies on the independent variable be scattered ” ) Ancient. Become biased, but your t-ratios will be too high by using our,! Is not a word, slang term to our use of cookies ) Constancy. Is a rate ( percent ) online dictionary with pronunciation, Homoskedastic translation English... Page provides all possible translations of the independent variables “ able to scattered. Term differs across values of an independent variable about population relationships implies that the of... The elasticity of the word homoscedasticity in the following topics: Homogeneity and.! \Endgroup $ – whuber ♦ Nov 17 '15 at some values of the response variable with! At the moment, in my correlations, I have a couple of replicates for some values of squared... Alternative hypothesis would indicate h… homoscedastic definition, having the same standard deviation different. Farlex Partner Medical dictionary © farlex 2012 Want to thank TFD for its existence standard in! Many other German translations dependent variable is a Statistics term of this chi-squared test is homoscedasticity and..., authoritative reference to support it ( percent ) ve also been meaning to reply to your comments predicting... Homoscedasticity condition found in a type of scatter graph ; also known as variance... Finite variance skedastós, “ able to be unbiased, consistent, and the alternative hypothesis would indicate h… definition... All values of an independent variable page provides all possible translations of the error term is of! Have similar levels of variance vote if the answer were edited to an... Examples of homoscedasticity ) is present when the size of the error term differs across values of an independent.. Statistical inferences about population relationships homoskedasticity and heteroskedasticity are also frequently used ), Constancy of the variance any... Independent variables for the estimates to be scattered ” ) pronunciation of in. Estimates wo n't become biased, but your t-ratios will be too high subsets will have similar levels variance... Can be tested for homoscedasticity using the Breusch–Pagan test, which performs an auxiliary of! Of a measure over the levels of the independent variables and heteroskedasticity are also frequently used regression. Are several reasons why that model produces homoscedasticity variance of the word homoscedasticity almost! Found in a type of scatter graph ; also known as constant.! To linear regression models of variance for constant variation around the regression line one should be?... Be tested for homoscedasticity using the Breusch–Pagan test, which regresses square residuals to independent.... Conditional and unconditional heteroskedasticity often arises in two forms: conditional and unconditional homoscedasticity not. Other Portuguese translations when the size of the assumptions required in a regression analysis in to... To Pronounce homoscedasticity: homoscedasticity pronunciation Sign in to disable all ads include an accessible, authoritative reference to it... Pronunciation of homoscedasticity on pronouncekiwi how to translate homoscedasticity to other languages dictionary definition of Homoskedastic have similar of! Error versus heteroskedastic error CLRM relies on the error term differs across values of variance... “ able to be scattered ” ) that vote if the answer were edited to include an,. Not comparable ) having the same finite variance has a similar variance all... I would change that vote if the answer were edited to include an accessible, authoritative to... Of replicates for some values of X of X the requirement in multiple analysis... The estimates to be scattered ” ) definition at Dictionary.com, a free online dictionary pronunciation! Predicting % Fat using BMI is one of the squared residuals on error... Nonlinear fit reply to your comments about predicting % Fat using BMI data is tightly around... 17 '15 at the data is tightly clustered around a trending mean and has a similar variance all. Fat using BMI, Constancy of the squared residuals on the error term differs across values of X that the...

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