what is the standard approach in the panel data model? what is a panel data model used for why use panel data instead of portfolio how to predict returns to stocks using a panel data model which approach does portfolio analysis use? which is a standard approach when modelling stock what is the standard approach to stock prediction what model do i use to predict weekly returns in stock prices why is portfolio approach a standard approach for empirical studies? what is the portfolio approach vs a panel data model what does panel data consist of what is the standard approach in portfolio design is a portfolio method the standard approach for a stock portfolio? how to predict return on stock how can i predict the average stock return can panel data predict the returns of a portfolio? why is the panel method used what is the panel model used for? what is the standard approach to predicting stock returns when is a portfolio approach used