Alternative Equation Formats

The equation on this page is available in multiple formats. Depending on your browser, some formats might not render correctly.

MathML

\begin{array}{rcl} E (u_{i t}^{2}) & = & σ_{i i} (heteroscedasticity) \\ E (u_{i t} u_{j t}) & = & σ_{i j} (contemporaneously correlated) \\ u_{i t} & = & ρ_{i} u_{i, t - 1} + ϵ_{i t} (autoregression) \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} {E}( u^{2}_{it})& =& {\sigma }_{ii} \quad \textrm{(heteroscedasticity)} \\ {E}(u_{it}u_{jt})& =& {\sigma }_{ij} \quad \textrm{(contemporaneously correlated)} \\ u_{it}& =& {\rho }_{i} u_{i,t-1}+ {\epsilon }_{it} \quad \textrm{(autoregression)} \nonumber \end{eqnarray*}