Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

I'm trying to rate each value with a scale. How can I determine the rest of the ratings below?

  • less weight is better
  • rating scale from 0-10. 10 being the best

    • 2.32 lbs - 10
    • 2.47 lbs
    • 2.55 lbs
    • 2.87 lbs
    • 2.88 lbs
    • 2.9 lbs
    • 3.7 lbs
    • 3.86 lbs
    • 3.9 lbs
    • 3.97 lbs
    • 4 lbs
    • 4.3 lbs
    • 5.07 lbs
    • 9.12 lbs
share|improve this question
    
Welcome to Math.SE! If the answer you received meets your requirements, you can mark it as accepted by clicking the check mark to the left of the question. –  user53153 Jan 5 '13 at 8:39
add comment

1 Answer 1

You seem want a non-negative decreasing function of mass in pounds where $f(2.32)=10$.

There are a large number of possibilities. One is $$f(x) = \frac{23.2}{x}.$$

For your example values, this gives (to two decimal places)

 x              f(x)
2.32 lbs        10
2.47 lbs        9.39
2.55 lbs        9.10
2.87 lbs        8.08
2.88 lbs        8.06
2.9  lbs        8
3.7  lbs        6.27
3.86 lbs        6.01
3.9  lbs        5.95
3.97 lbs        5.84
4    lbs        5.8
4.3  lbs        5.40
5.07 lbs        4.58
9.12 lbs        2.54
share|improve this answer
    
Thanks Henry. =) –  curb Jan 5 '13 at 1:23
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.