ESTIMADORES DE LOS PARÁMETROS
Nos vamos a restringir a tres tipos de parámetros: el total
poblacional de una variable X:
media
poblacional de esta misma variable:
proporción
de la población que pertenece a un grupo determinado:
es una variable indicadora that takes value 1 if the unit has selected the property and is set to 0 if you do not have.
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TOTAL is the total sample:
MEDIA, is the average meustral:
SHARE
is the sampling rate:
These estimators are unbiased for the population parameters.
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ESTIMATES OF VARIANCE
Here we show the expression of the variances for the parameters shown above.
variance of the sample mean:
ESTIMATES OF VARIANCE
Here we show the expression of the variances for the parameters shown above.
variance of the sample mean:
where is the sampling fraction and the quasivariable
Variance ratio: