This is a genuine attempt from myside to define variables in the stock market.
1.> If it is a stock then, "price, open, low, high and last price traded" with variables such as total volume traded, delivery volume and pure intraday volume are the only variables available.
2.>All permutations and combinations revolve around the true data of markets.
Now, F&O markets are the derivatives of cash markets, so, as the cash price will influence,it will change.
Other than stocks, if one has to study the cash price of an indices, such as, let's say Nifty 50, then one has to sum up all the data for the constituents of nifty 50.
I hope it is clear for all.