QUESTION IMAGE
Question
rt believes that mice exposed to microwaves will become extra ong (maybe hes been reading too much dioactive man). he decides to perform this eriment by placing 10 mice in a microwave 10 seconds. he compared these 10 mice to ther 10 mice that had not been exposed. test consisted of a heavy block of wood blocked the mouse food. he found that 8 of 10 of the microwaved mice were able to the block away. 7 out of 10 of the non - microwaved mice able to do the same. identify the - 11. control group 12. independent variable 13. dependent variable 14. what should barts conclusion be 15. how could barts experiment be improved?
11. Control Group
The control group in an experiment is the group not exposed to the independent variable. Here, the non - microwaved mice (10 mice that had not been exposed to microwaves) are the control group as they are used for comparison with the group exposed to microwaves.
The independent variable is the factor that is manipulated in an experiment. In this experiment, Bart manipulates the exposure of mice to microwaves. So the independent variable is the exposure to microwaves (or microwave exposure).
The dependent variable is the factor that is measured or observed to see the effect of the independent variable. Here, the ability of the mice to move the block (measured by the number of mice that could move the block) is the dependent variable as it depends on whether the mice were exposed to microwaves.
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The 10 mice that had not been exposed to microwaves.