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I'm using the WHO Suicide Statistics to try and ascertain the rate of suicide per 100,000 of the population. I'm afraid I'm not from a maths background and this is the first time using Stack Mathematics, so forgive me if this sounds simple.

So, I have two questions:

  1. How do I calculate this rate?
  2. What is the logic/methods behind rounding ratios?

Below is an mock example of the data I'm using:

  Country    Suicides    Population

  Italty     5000        45000000
  Burma      350         2365000
  Ghana      1100        14550000

My first step was to calculate the ratio of suicides to population, i.e.

  Ratio = suicides / population

  Country    Suicides    Population   Ratio

  Italty     5000        45000000     0.00011
  Burma      350         2365000      0.00014
  Ghana      1100        14550000     0.00007

So, how can I ascertain how many suicides are estimated for every 100,000 people in this example?

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  • $\begingroup$ You've done the key step already. By computing Ratio you have determined the multiplicative factor. Take Italy, say. Just as $5000=.00011\dots \times 45,000,000$ we have $11.111\dots = .00011\times 100,000$. Thus there are $11.111\dots$ suicides in Italy out of every hundred thousand people. $\endgroup$ – lulu Dec 28 '18 at 15:06

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