Population Formulas
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Last updated 7:47 PM on 10/16/25
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6 Terms
1
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Population change
(Births + immigration) - (Deaths + emigration)
2
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Doubling Time
70/growth rate
3
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CBR/CDR
(births or deaths)/(pop. by 1000)
(Ex. 150000 —> 150)
4
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Percent Change
(new-old)/old x 100
5
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Growth Rate (R)
(CBR-CDR)/10
6
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Final Population Size
Nfinal = Ninitial (rt)
Note 
Flashcards (179)