Chapter 1
Understanding Statistics
Введение в статистику
The science of statistics involves collecting, analyzing, interpreting, and presenting data. The method of collecting, organizing, and summarizing data is ...
Как классифицируются данные: категориальные данные
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. ...
Как классифицируются данные: числовые данные
Data that are countable or measurable in specific units are called numerical or quantitative data. Quantitative data are always numbers. Quantitative data ...
Номинальный уровень измерения
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 ...
Порядковый уровень измерения
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 ...
Интервальный уровень измерения
For effective statistical analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
Data measured using ...
Уровень измерения отношения
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 ...
Сбор данных путем наблюдений
Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the ...
Экспериментальный сбор данных
Data collection is a systematic method of obtaining, observing, measuring, and analyzing accurate information. An experimental study is a standard method ...
Сбор данных с помощью опроса
The systematic method of obtaining and analyzing accurate information of a population is called data collection. A survey is a standard method of data ...
Метод случайной выборки
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 ...
Метод систематической выборки
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 ...
Удобный метод выборки
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 ...
Метод стратифицированной выборки
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 ...
Метод кластерной выборки
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population ...
Авторские права © 2025 MyJoVE Corporation. Все права защищены