How do I calculate the rate per 100,000 persons of something occurring for a quarter of a year?
If I have a count of 12 people bought cars in the September quarter and an annual population of 2000 how do I calculate the appropriate rate per 100000?
Fo a whole year I would do count / population * 100000. I've heard that you are to divide the population by 4 (quarters) as the count is for a quarter. Is that correct?
count / (population / 4) * 100000.
I've tried to find some information on the internet to no avail. Can someone provide a quick answer and reason so I will understand. Dividing by 4 doesn't intuitively gel with how I think of it.
Your time is very much appreciated,
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