For each stock an Investable Weight Factor (IWF) is calculatedIWF = (available float shares)/ (total shares outstanding)
Where available float shares are defined as total shares outstanding less shares held by strategic holders. The float-adjusted index is calculated:

Index = Stock Price*Total Shares Outstanding*IWF / Index Divisor

The Additional Weight Factor is the adjustment factor of the stock which adjusts the market capitalization for all index constituents to achieve the user-defined weight, while maintaining the total market value of the overall index.

Impact cost is the measure of liquidity of the security. It is the cost a buyer or seller must incur for a particular quantity of order at a given point of time.

In a total return index changes in the index level reflect both movements in stock prices and the reinvestment of dividend income. A total return index represents the total return earned in a portfolio that tracks the underlying price index and reinvests dividend income in the overall index, not in the specific stock paying the dividend
Formula for Total Return Index –
Total Return Index= Previous Total Return*[1+(Todays PR Index+ Index Dividend)/Previous PR Index-1)

The Price Return Index reflects the return earned from the Index Portfolio. The PR index does not consider the returns arising from dividends.

Standard Deviation is a statistical tool, which measures the variability of returns from the expected value, or volatility.

The Beta factor describes the movement in a stock's or a portfolio's returns in relation to that of the market returns.