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Camillio Posted 16 years ago
Grammar

Change with/at rate?

Hello,

could anyone help me, please? I want to say, that some two things vary and that the rates of their variations are different. What is correct?
1. "They vary with different rates"
2. "They vary at different rates"

Thank you in advance.
  

Top answer

I would say they vary at different rates. " How is it measured and how is it described? If I understood, I think I could feel better about my answer.

— Avangi

  • I would say they vary at different rates.
  • " How is it measured and how is it described?
  • If I understood, I think I could feel better about my answer.
  • Do you mean the measurement of one variable reverses direction more frequently than the other, or that the amount of change in measurement per unit of time is greater in one variable than in the other?
  • Best wishes, - A.
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4 Answers
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I would say they vary at different rates.

I'm not sure I'm familiar with "rate of variation." How is it measured and how is it described?
If I understood, I think I could feel better about my answer.

Do you mean the measurement of one variable reverses direction more frequently than the other, or that the amount of change in measurement per unit of time is greater in
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Hello, thank you :-)
Well, the 'rate of change' has the meaning of the latter case.
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Thank you.

So you're saying that the units of measurement are the same, and the ranges are approximately the same.
So if two pens were recording these variations on two moving charts, the charts would be advancing at the same rate, and the range of travel of the two pens would be approximately the same.
The essential difference would be that one pen is moving faster than the othe
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