Answer/Explanation:
There are usually two types of variables in a an hypothesis in a typical research study. These are independent variable, and dependent variable.
The independent variable is the variable that is usually manipulated, which causes a change on the dependent variable. On the other hand, the dependent variable is the variable that changes as a result of the change that occurs on the independent. A change on the independent variable, causes a change on the dependent variable. In other words, the dependent variable is dependent on the independent variable that is being changed or manipulated. The dependent variable is what is being measured or tested in a research study.
In the hypotheses stated in the question above, the independent variable and dependent variable for each are listed as below:
First hypothesis:
Independent variable: number of cigarettes smoked
Dependent variable: risk for lung cancer
Second Hypothesis:
Independent variable: number of sharks swimming
Dependent variable: number of shark attacks on humans
Third Hypothesis:
Independent variable: amount of milk
Dependent variable: strength of a person's bones
Answer:
Part A: Identifying Variables
The dependent variable happens as a result of values/changes associated with the independent variable.
Independent variable: number of cigarettes smoked
Dependent variable: risk for lung cancer
Independent variable: number of sharks swimming in a coastal region
Dependent variable: number of shark attacks on humans
Independent variable: amount of milk a person drinks
Dependent variable: the strength of his or her bones
Explanation:
