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There are various tests for heteroscedasticity. For bi-variate data the easiest is simply plotting the data as a scatter graph. If the vertical spread of the data points is broadly the same along its range then the data are homoscedastic and if not then there is evidence of heteroscedasticity.
Heteroscedasticity may be removed using data transformations. The appropriate transformation will depend on the data and there is no general transformation that will work in all instances.
What else can I help you with?
How can one detect heteroscedasticity in a dataset?
Heteroscedasticity in a dataset can be detected by visually inspecting a scatter plot of the data or by conducting statistical tests such as the Breusch-Pagan test or the White test. These tests help determine if the variance of the errors in a regression model is not constant across all levels of the independent variables.
What is heteroscedasticity?
variables
Are heteroscedasticity robust standard errors consistent?
The answer depends on consistent with WHAT!
What is heteroscadacity?
In regression analysis , heteroscedasticity means a situation in which the variance of the dependent variable varies across the data. Heteroscedasticity complicates analysis because many methods in regression analysis are based on an assumption of equal variance.
What is heteroscedasticity in statistics?
releation ship between two variable one depend other is undepended
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Once you've detected an unauthorized individual on an aircraft and have removed them your next step will be to?
Detain individual and alert SF
Which description is true regarding the operation of dhcp?
if an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administrator.
Can Appendicitis go away without treatment?
no , if it is detected in early period it can be removed by radiation treatment and by tablets if not surgery is the only option
Will airbag activate if front fender removed on 1996 Toyota tacoma?
The airbag will most likely not deploy on a 1996 Toyota Tacoma is the front fender is removed. The airbag sensor is designed to detected a combination of speed and impact before deploying.
System error your system infected with dangerous virus?
Use windows live one care , i had the same pop up problem .. installed ... it detected .. and removed .. simple !
In the presence of heteroscedasticity OLS estimators are biased as well as inefficient?
They are still unbiased however they are inefficient since the variances are no longer constant. They are no longer the "best" estimators as they do not have minimum variance
