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vampirchik [111]
3 years ago
12

The effect of the time of day a science class is taught on test scores is being

Mathematics
2 answers:
Simora [160]3 years ago
5 0

If you have answer choices that would be helpful.

If not I would assume that it means that giving every student the same test is an example of a controlled variable.

s344n2d4d5 [400]3 years ago
4 0

Answer:

Amount of homework given

Step-by-step explanation:

Correct!

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