ok visto Bouza - Academia.edu (original) (raw)

ok visto Bouza

A fortunate person who went into mathematics, discovered statistics and enjoys philosophizing.as a result Licenciado en Matemática ,Universidad de La Habana [Cuba], 1971Maestro en Ciencias, Universidad de La Habana [Cuba], 1974Candidato a Doctor, Universidad de La Habana [Cuba]Doctor en Ciencias, Universidad de La Habana [Cuba]Diplom Mathematik, Universitet Beograd [Yugoslavia], 1978Magister, Universitet Beograd [Yugoslavia]Doctor Nauka, Universitet Beograd [Yugoslavia]by march 2018:65 Research Projects221 published papers enjoying jazz and a good Brandy.

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Research paper thumbnail of HOW BIG THE SAMPLE DATA SHOULD BE FOR ACCEPTING THE NORMALITY OF THE SAMPLE MEAN

Nowadays we deal with Big-Data commonly. The users of statistics rely on having a large sample s... more Nowadays we deal with Big-Data commonly. The users of statistics rely on having a large sample
size n for using the statistical methods based on normality. Usual inference methods are typically
based on considering the Normal as the limit distributions of the sample mean for “a large n”. With
large enough sample sizes (> 30 or 40), the violation of the normality assumption should not cause
major problems. This fact implies that we can use parametric procedures even when the data are not
normally distributed. Al least a goodness-of-fit test must be performed for accepting whether
normality is valid or not.
Monte Carlo (MC) techniques are used for selecting independent random samples of populations of
means of three variables of importance in web network management. Different tests are performed
to establish the acceptance of the normality. We did not find reliable results even for samples of
size 10 000.

Research paper thumbnail of Respuestas aleatorizadas.pdf

Incremento de la Calidad de las respuestas de preguntas sensibles en encuestas”: Respuestas alea... more Incremento de la Calidad de las
respuestas de preguntas
sensibles en encuestas”: Respuestas
aleatorizadas

Research paper thumbnail of El problema de las no respuestas

Veamos el problema en su totalidad, para tener referencias

Research paper thumbnail of Estrategias de muestreo

Como vimos una estrategia de muestreo viene dada por un diseño un estimador . Estrategias de mue... more Como vimos una estrategia de muestreo viene
dada por un diseño un estimador .
Estrategias de muestreo son construidas al
hacer los pares correspondientes.
En particular vamos ver las propiedades d
estimadores bajo condiciones simples

Drafts by ok visto Bouza

Research paper thumbnail of Reporte  tecnico ECA de cáncer (00000002).pdf

We present a review of the most popular statistical tools employed in the analysis of Data Qualit... more We present a review of the most popular statistical tools employed in the analysis of Data Quality in
life studies. We considered mainly those of interest if ECA cancer longitudinal studies

![Research paper thumbnail of Randomized estimation a proportion using Ranked Set Sampling and Warner`s procedure](https://attachments.academia-assets.com/56131938/thumbnails/1.jpg)

Ranked set sampling is considered as a design for selecting a simple from a finite population. G... more Ranked set sampling is considered as a design for selecting a simple from a
finite population. Generally it performs better than simple random sampling. Chen et al
(2006) proposed a procedure for ranking categorical variables. This paper is concerned
with the study of a sensitive variable. The randomized responses procedure due to
Warner (1965) is used for eliminating answer biases. The variance of the proposed
estimator is derived and it is larger than the proposal of Chen et al (2006). A study of
the quality of the environment is developed. Direct responses and randomized responses
estimators are compared. Ranking procedures used information provided by
measurements of the contaminants in the air and the water.

Research paper thumbnail of HOW BIG THE SAMPLE DATA SHOULD BE FOR ACCEPTING THE NORMALITY OF THE SAMPLE MEAN

Nowadays we deal with Big-Data commonly. The users of statistics rely on having a large sample s... more Nowadays we deal with Big-Data commonly. The users of statistics rely on having a large sample
size n for using the statistical methods based on normality. Usual inference methods are typically
based on considering the Normal as the limit distributions of the sample mean for “a large n”. With
large enough sample sizes (> 30 or 40), the violation of the normality assumption should not cause
major problems. This fact implies that we can use parametric procedures even when the data are not
normally distributed. Al least a goodness-of-fit test must be performed for accepting whether
normality is valid or not.
Monte Carlo (MC) techniques are used for selecting independent random samples of populations of
means of three variables of importance in web network management. Different tests are performed
to establish the acceptance of the normality. We did not find reliable results even for samples of
size 10 000.

Research paper thumbnail of Respuestas aleatorizadas.pdf

Incremento de la Calidad de las respuestas de preguntas sensibles en encuestas”: Respuestas alea... more Incremento de la Calidad de las
respuestas de preguntas
sensibles en encuestas”: Respuestas
aleatorizadas

Research paper thumbnail of El problema de las no respuestas

Veamos el problema en su totalidad, para tener referencias

Research paper thumbnail of Estrategias de muestreo

Como vimos una estrategia de muestreo viene dada por un diseño un estimador . Estrategias de mue... more Como vimos una estrategia de muestreo viene
dada por un diseño un estimador .
Estrategias de muestreo son construidas al
hacer los pares correspondientes.
En particular vamos ver las propiedades d
estimadores bajo condiciones simples

Research paper thumbnail of Reporte  tecnico ECA de cáncer (00000002).pdf

We present a review of the most popular statistical tools employed in the analysis of Data Qualit... more We present a review of the most popular statistical tools employed in the analysis of Data Quality in
life studies. We considered mainly those of interest if ECA cancer longitudinal studies

![Research paper thumbnail of Randomized estimation a proportion using Ranked Set Sampling and Warner`s procedure](https://attachments.academia-assets.com/56131938/thumbnails/1.jpg)

Ranked set sampling is considered as a design for selecting a simple from a finite population. G... more Ranked set sampling is considered as a design for selecting a simple from a
finite population. Generally it performs better than simple random sampling. Chen et al
(2006) proposed a procedure for ranking categorical variables. This paper is concerned
with the study of a sensitive variable. The randomized responses procedure due to
Warner (1965) is used for eliminating answer biases. The variance of the proposed
estimator is derived and it is larger than the proposal of Chen et al (2006). A study of
the quality of the environment is developed. Direct responses and randomized responses
estimators are compared. Ranking procedures used information provided by
measurements of the contaminants in the air and the water.

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