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13 January, 20:33

Question 19 Unsaved

If you are studying the effects of UV rays on eyesight and you group 10 people together and make them wear sunglasses for 10 weeks and see if their eyesight is affected and then take another group and do not give them sunglasses and test their vision after 10 weeks, what is the response variable? (note this is not an ethical study)

Question 19 options:

10 people

vision test

sunglasses

10 weeks

+3
Answers (1)
  1. 13 January, 23:03
    0
    A response variable you are trying to measure once you've done the experiment.

    What have you done? You've measured what sunglasses will do to affect eyesight. You have used a 10 week period to measure their response. You don't really care what the response is - - only if there is one.

    10 people and 10 weeks don't change. Those two are not a choice for an answer. Now you come to the crunch of the question. Is it the sunglasses you are trying to measure or is it what your eyes have done because you were wearing sun glasses.

    So we need an answer. If you say sun glasses, how did you measure what they did. THAT's the answer. The answer is not the sunglasses.
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