Answer:
The independent variable is <u>sports drink</u> and the dependent variable is <u>amount of energy</u>.
Explanation:
In regression analysis there are two types of variables.
One is the dependent variable and the other is the independent variable.
A dependent variable is the variables under study. That is the variables that is being observed for any changes when the factors affecting the dependent variable is changes.
An independent variable is the variables that is changed to determine the changes in the dependent variables. There can be more than 1 independent variable in a regression analysis.
In this case an experiment is conducted to determine the affect of sports drink on the energy of the players.
The experiment consisted of giving some players water and some sports drink. Then the players were asked to watch a basketball game on TV for 30 minutes. Then they were asked to perform some physical tasks. The efficiency of the players were then observed.
In this case the dependent variable is the energy of the players and the independent variable is the drink they had, either water or sports drink.
The answer is C. The endothelium on the inside of the artery.
