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Variables
More Variables!
Change or Not to Change?
100
The one thing that is varied in the experiment.
What is manipulated/independent variable.
100
Is the thing that will change, that you intend to measure.
What is dependent/respondent variable.
100
Must stay the same between the groups.
What is control variables.
200
Is the size of fish affected by the depth of the ocean they live? What would be the IV?
What is depth of ocean.
200
A group of scientists test the behavior that women find men without earrings more attractive than men with earrings. What is the IV?
What is men wearing earrings.
200
You are testing if different amount of light affect plant growth. What needs to be the same between all the plants for experiment to be valid?
What is soil, fertilizer, type of plants, amount of water, time of test
300
Is photosynthesis production of starch faster when plants are exposed to different amounts of light? What would be the DV?
What is amount of starch produced.
300
Children who entered kindergarten at age 5 were compared with children who entered kindergarten at age 6 on measures of academic achievement taken at grade 5. Results indicate that children who entered kindergarten at age 6 scored higher on standardized tests than those kids that entered at age 5. What is the DV?
What is score on standardized test.
300
You want to see if students do better on a test if they study with music. You divide up one class into 2 groups of 15 students. Group A listens to music while studying their notes for 1 hour a night. Group B studies their notes with no music for 1 hour a night. After two weeks, a comprehension test was given to all students after they had studied their notes in silence or with music turned on.
What is 4--two weeks, 1 hour a night, 2 groups of 15 students, test
400
Spending time with a pet animal decreases the amount of stress right before taking a test. What is the respondent variable??
What is the amount of stress.
400
A researcher wants to investigate the types of social behavior that develops in children in day care depending on the amount of time the child spend in day care. What is the DV?
What is social behavior in children.
400
One tank of gold fish is fed the normal amount of food once a day. A second tank is fed twice a day. A third tank is fed four times a day during a six week study. The fish’s weight is recorded daily. What are the controls?
What is 3 tanks of goldfish, 6 week study, weight recorded daily.
500
Students at a University were split into two groups and each received a different text for a philosophy course. Once group received a traditional text book, while the other received an interactive textbook on a tablet computer. After the course, the final exam marks between the two groups of students was compared. What is the manipulated variable?
What is media type of textbook.
500
Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. IV ? DV ? CG ?
What is IV-different humidity levels DV-Height of redwood tree CG-Tree kept outside
500
In order for a experiment to be valid and develop creditable data this is needed.
What is a control group.