Capítulo 1
Noções Básicas de Estatística
Introdução à Estatística
The science of statistics involves collecting, analyzing, interpreting, and presenting data. The method of collecting, organizing, and summarizing data is ...
Como os dados são classificados: dados categóricos
A variable, usually notated by capital letters such as X and Y, is a characteristic or measurement that can be determined for each member of a population. ...
Como os Dados são Classificados: Dados Numéricos
Data that are countable or measurable in specific units are called numerical or quantitative data. Quantitative data are always numbers. Quantitative data ...
Escala de Medição Nominal
The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of ...
Escala de Medição Ordinal
The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of ...
Escala de Medição de Intervalo
For effective statistical analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
Data measured using ...
Escala de Medição de Razão
The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of ...
Coleta de Dados por Observações
Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the ...
Coleta de dados por experimentos
Data collection is a systematic method of obtaining, observing, measuring, and analyzing accurate information. An experimental study is a standard method ...
Coleta de dados por questionários
The systematic method of obtaining and analyzing accurate information of a population is called data collection. A survey is a standard method of data ...
Método de amostragem aleatória
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the ...
Método de Amostragem Sistemática
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the ...
Método de Amostragem por Conveniência
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the ...
Método de Amostragem Estratificada
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the ...
Método de Amostragem por Agrupamentos
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population ...
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