Dr.Hines is interested in studying how indoor lighting can influence people's moods during the winter.A sample of 100 households is selected.Fifty of the homes are randomly assigned to the bright-light condition where Dr.Hones replaces all the lights with 100-watt bulbs.In the other 50 houses,all the lights are changed to 60-watt bulbs.After two months,Dr.Hines measures the level of depression for the people living in the houses.In this example,the level of depression is the ____ variable.
A)dependent
B)extraneous
C)correlational
D)independent

Question

Dr.Hines is interested in studying how indoor lighting can influence people's moods during the winter.A sample of 100 households is selected.Fifty of the homes are randomly assigned to the bright-light condition where Dr.Hones replaces all the lights with 100-watt bulbs.In the other 50 houses,all the lights are changed to 60-watt bulbs.After two months,Dr.Hines measures the level of depression for the people living in the houses.In this example,the level of depression is the ____ variable.
A)​dependent
B)​extraneous
C)correlational
D)​independent

Quizplus · Accepted Answer

The level of depression being measured is the variable that is dependent on the level of indoor lighting. The independent variable is the type of lighting condition (100-watt bulbs or 60-watt bulbs) that was randomly assigned to each household. Extraneous variables are other factors that could potentially influence the level of depression, but are not intentionally manipulated in the study. Correlational variables refer to relationships between two variables without any manipulation or control.

DrHines Is Interested in Studying How Indoor Lighting Can Influence