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Chapter 3

Measure of Central Tendency

Что такое центральная тенденция?
Что такое центральная тенденция?
Descriptive statistics describe or summarize relevant characteristics of a sample and aid in the analysis of data of interest. When analyzing large ...
Среднее арифметическое
Среднее арифметическое
The arithmetic mean is the most commonly used measure of the central tendency of a data set. It is defined as the sum of all the elements constituting the ...
Среднее геометрическое
Среднее геометрическое
The mean is a measure of the central tendency of a data set. In some data sets, the data is inherently multiplicative, and the arithmetic mean is not ...
Среднее гармоническое
Среднее гармоническое
The arithmetic mean is usually skewed towards the larger values in the data set. Therefore, to avoid this inherent bias towards smaller values, the ...
Усеченное среднее
Усеченное среднее
While measuring the mean of a data set, care needs to be taken when associating the mean to its central tendency. The same goes for the arithmetic mean, ...
Средневзвешенное значение
Средневзвешенное значение
While taking the arithmetic, geometric, or harmonic mean of a sample data set, equal importance is assigned to all the data points. However, all the ...
Среднекорневой квадрат
Среднекорневой квадрат
If in an experiment, data values have a probability of being both positive and negative, neither the arithmetic mean, the geometric mean, nor the harmonic ...
Среднее значение из частотного распределения
Среднее значение из частотного распределения
Sometimes, data gathered from an experiment on a large sample or population are organized into concise tables. In such cases, the frequency of the ...
Что такое режим?
Что такое режим?
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set. There can be more than one ...
Медиана
Медиана
Besides mean, the median is a widely used measure of central tendency. Typically, median is defined as the central or middle value of a data set, measured ...
Средние частоты
Средние частоты
A somewhat easy to compute quantitative estimate of a data set’s central tendency is its midrange, which is defined as the mean of the minimum and ...
Перекос
Перекос
The measures of central tendency calculated from a data set may not reveal much about its intrinsic distribution. If a plot is made of the data ...
Виды асимметрии
Виды асимметрии
If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are ...
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