Variance

Analysis of Variance
A statistical technique to decompose total population variance into parts to test significance of differences among groups.
Covariance Matrix
A comprehensive look at the definition, significance, and analytical frameworks associated with the covariance matrix in economics.
Efficient Estimator
An in-depth entry on the concept of efficient estimator in the field of statistics and econometrics.
Heteroscedasticity
Exploring the concept of heteroscedasticity in statistical and econometric models, including its definition, implications, detection tests, and methods for managing it.
Standard Deviation
Definition and comprehensive analysis of the standard deviation in economics.
White Noise
A stochastic process with zero mean, constant variance, and zero autocorrelation