Panel data is used when the data is varying across time and cross section, within which when your panel data has years per cross section more than 20. Then the data becomes long panel data thus simple OLS (FE / RE ) may not work....
Panel Non Linear Autoregressive Distributed Lagged Model is used for the case of Panel data where number of years per cross section are more than 20 and the variables are non stationary and there is asymmetric effects in at least one of the independent variable....
When the independent variables are collinear with each other, and there is no option to reduce them using step wise regression or factor analysis as all of them are important. Then in this case ridge regression can be used to estimate the model by force...
This model is estimated using XTIVREG2, XTABOND and other variant commands in STATA...
STATA provides innovative platform named as project manager, it can manage several do files connected to a single page....
We can insert the Excel data into Stata by just copying and pasting. This tutorial well help in performing the first step towards using Stata for data analysis ...
ESTOUT command can be used to store different regressions having same dependent variable and later can be used to form a formatted table to be used for the research purposes....
Moving average method can be used to make a smooth data series, mostly data having high frequency is treated in this process when it is estimated against annual data so that the chances of heteroskedasticity is reduced....
Contour graphs can be used to plot a 3 dimensional graphs using colors for the third axis....
One advantage of STATA is that new user-written commands and modules can be installed when they are available. So new methods can be used without installing new STATA software....