To test for constant variance one undertakes an auxiliary regression analysis: this regresses the squared residuals from the original regression model onto a set of regressors that contain the original regressors along with their squares and cross- products. One then inspects the R 2.
The Lagrange multiplier ( LM) test statistic is the product of the R 2 value and. Cross- sectional data, or a cross section of a study population, in statistics and econometrics is a type of data collected by observing many subjects ( such as individuals, firms, countries, or regions) at the same point of time, or without regard to differences in time.
Analysis of cross- sectional data usually consists of comparing the differences among the v 16, · 11/ 16/ Mentor Boopathi Kumar Kumarasamy Gounder - Android Apps on Google Play.