Capítulo 1
Understanding Statistics
Introducción a la Estadística
The science of statistics involves collecting, analyzing, interpreting, and presenting data. The method of collecting, organizing, and summarizing data is ...
Cómo se clasifican los datos: datos 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. ...
Cómo se clasifican los datos: Datos numéricos
Data that are countable or measurable in specific units are called numerical or quantitative data. Quantitative data are always numbers. Quantitative data ...
Nivel nominal de medición
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 ...
Nivel ordinal de medición
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 ...
Nivel de medición de intervalo
For effective statistical analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
Data measured using ...
Relación Nivel de Medición
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 ...
Recolección de datos por observaciones
Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the ...
Recopilación de datos mediante experimentos
Data collection is a systematic method of obtaining, observing, measuring, and analyzing accurate information. An experimental study is a standard method ...
Recolección de datos por encuesta
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 muestreo aleatorio
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 muestreo sistemático
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 muestreo por conveniencia
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 muestreo estratificado
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 muestreo por conglomerados
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population ...
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