Sample variance, often denoted as ‘s^2,’ is a measure used to determine how spread out a data set is. It helps reveal the degree to which the individual data points differ from the mean value of the ...

The concept of measures of dispersion such as variance of ungrouped data is used to show the data collecting and representation processes in statistical research. This variance in the data gathered ...

Sample variance is a statistical measure that helps to quantify the degree of dispersion or spread in a set of data. It represents how much the individual data points vary from the mean (average) of ...

1 China University of Geosciences, Wuhan, China. 2 Department of Statistics, Hubei University of Economics, Wuhan, China. Economic system mathematical model often contains multiple variance change ...

Market size variance and market share variance are two ways of using market data to determine its effect on a company's profits. While the two terms are related, they calculate the effects of ...