Cross tabulations are used for the variables which are discrete or mostly qualitative. They produce contingency tables of probabilities of outcomes which can be used to generate a pattern....
Breusch-Godfrey Test is used to check first order as well as higher order auto-correlation in data. Following tutorial will enable you to learn how to apply this test in STATA....
Jarque-Bera Test is used to check skewness and kurtosis of the residuals of the model, as they determine the normal nature of variable....
For primary data usually there are too many similar variables which are available for estimation, for this PCA and FA method are used to arrange the variables into groups which are most relevant to each other in order to prioritize the selection of variables. Following...