Examples of directly related variables
Definition: Directly Proportional. By looking at the equation of the line ( y 0. 5 x ), we know that the slope of the line is 0. 5. It means that, in this example, the proportionality constant is 0. 5. The airplane production cost is directly proportional to the plane size multiplied by the constant 0. 5.Correlation is a form of dependency, where a shift in one variable means a change is likely in the other, or that certain known variables produce specific results. A general example can be seen examples of directly related variables
If two variables are directly related they will always graph as: An upsloping line When illustrating graphically the relationship between the price of a stock and the quantity of
Example of Variables in Scientific Experiments If a scientist conducts an experiment to test the theory that a vitamin could extend a person's lifeexpectancy, then: The independent variable is the amount of vitamin that is given to the subjects within the experiment. Example: you are paid 20 an hour. How much you earn is directly proportional to how many hours you work. Work more hours, get more pay; in direct proportion. This could be written: Earnings Hours worked. If you work 2 hours you get paid 40examples of directly related variables In our example, the quantity of bread demanded (# 1) is inversely related to the price of bread (# 2). These two variables are used for the demand schedule and the demand curve. In the schedule, higher values of price are linked to lower values of quantity demanded.