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1 vote
Please help with number 22!!!!!!!!!!!

Please help with number 22!!!!!!!!!!!-example-1

2 Answers

6 votes
If the student aimed to measure the weight of the rats, his mistake was a difference in living space for each rat. He should have only changed one variable--the food--for each rat. The results will be incorrect because the rats have different amounts of living space in addition to different amounts of food.
User Lingyfh
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1 vote
I mean... The conditions weren't identical, so that's an inconsistency and could skew the results...
User Husmus
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7.7k points

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