Q) The plot below shows the relationship between the mortality risk of cardiovascular disease and the number of steps a person walks per day. Based on the data, which one of the following options is true?

  • The risk reduction on increasing the steps/day from 0 to 10000 is less than the risk reduction on increasing the steps/day from 10000 to 20000
  • The risk reduction on increasing the steps/day from 0 to 5000 is less than the risk reduction on increasing the steps/day from 15000 to 20000.
  • For any 5000 increment in steps/day the largest risk reduction occurs on going from 0 to 5000.
  • For any 5000 increment in steps/day the largest risk reduction occurs on going from 15000 to 20000.
Solution:

Risk reduction value in (0-5000) = 1 – 0.45 = 0.55 which is maximum

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