what is the unit root of price ratio test price ratio vs raw price ratio what is the difference between adf and dickey-fuller what is the difference between a raw price and daily return what is the difference between raw price and unit root what is the dickey factor? why do we use an adf test what is adf test how to find stock price what is adf price what is the adf unit for price ratio what is the value of adf unit what is the unit root for adjusted dickey-furler what's the difference between raw and adjusted dichey-uller adf price vs daily return what is adf in r what is the difference between raw prices and daily returns what is the unit root of price ratio in dickey fuller? what is value of adf unit test how to use adf unit for a stock