To illustrate operational definitions of psychological concepts, we contrast them with their dictionary definitions. Table 4.1 lists six psychological variables, their dictionary definitions and one or more operational definitions.
Of course there will be wide variations, butâ¦. According to my (very general) estimations listed above, on average each person may consume 66 gallons of water each day. Generally, in the United States there are about 2.5 people per household. So the water consumption figure jumps to 165 gallons per day.
How much water does one person need to drink per day? you should drink at least 7 to 10 average sized glasses of water each day.   One average sized glass is about eight ounces. There are 16 ounces in a pint, 2 pints in a quarâ¦t, and 4 quarts in a gallon, so, mathematically, there are about 128 ounces in a gallon.