Jon always keeps his bread in the cabinet, in the dark. Recently, his bread has been getting moldy rather quickly and needed to be thrown out. For an experiment, Jon puts two slices of the same brand of bread in the cabinet, in the fridge, in the sunlight (on the counter), and in the freezer. Jon leaves the bread in there for two months and checks it once every day. At the end of his experiment, Jon will look at all his data and compare to see which method keeps his bread fresh the longest. What is the IV/DV/Control/Constant/Data Type?

IV:

DV:

Control:

Constant:

Data Type (Qual / Quan):

IV: Method of preserving bread

DV: How long the bread stays fresh

Control: Bread kept in the cabinet

Constant: Same slice of bread, same brand of bread, same amount of time

Data Type: Quantitative

Explanation:

Independent variable is the variable that is manipulated or changed by the experimenter in an experiment. In this case, the independent variable is METHOD of PRESERVING BREAD or LOCATION OF KEEPING BREAD.

Dependent variable is the variable that is being measured in the experiment. The dependent variable responds to the changes made to the independent variable. In this case, How long the bread stays fresh is the dependent variable.

Constants are variables that the experimenter intentionally keeps unchanged throughout the experiment in order not to influence the result. In this experiment, the constants are: Same slice of bread (2 slices), same brand of bread, same amount of time (2 months).

Control group is the group that does not receive experimental treatment. The control group of this experiment will be the BREAD HE KEEPS IN THE CABINET.

Data type can either be quantitative or qualitative. The data type in this experiment is QUANTITATIVE because it involves the use of counts and numbers, which is time in this case.