what is a base model in spss how many days to collect stock data for each company in the world. how to do a typical forecast model how to use spss for stock trading what type of model does the spss model use what is wikiVol0 spss how to run a forecast in spss what is the dependent variable in spss what is hbvol how to do a simple model from wikipedia what is the dependent variable for stock trading volume how do you do cross sectional time series in spss which spss model best suits my data spss calculate the wikivolume of a data set wikipedia stock trading volume how to do basic forecasting how to run a basic model with pooled data what is the dependent data variable for stock vol how many stocks are covered in stock data what is a pooled crosssectional timeseries data model