Question

cbr, cdr, and nir assignment
directions: answer each question and show your work on a separate sheet of paper, which you
will attach. round to the tenths place if necessary.

1. pottsburg

population: 624,100
2023 cbr: 16
2023 cdr:18
a. what was the number of births for pottsfield in 2023:

b. what was the number of deaths for pottsfield in 2023:

c. what is the nir for pottsfield based on this data?:

d. is it shrinking or growing based on this data?

1. coggsville

population 57,000
births in 2023: 627
cdr: 8
a. what was the cbr in coggsville in 2023?

b. what was the total number of deaths in coggsville in 2023:

c. what was the nir for coggsville?

d. is the population shrinking or growing?

1. lumene

population: 4,821
cbr: 7
deaths: 46
a. what was the total births based on the data for lumene?

b. what was the cdr given the data?

c. what was the nir for lumen?

d. was it shrinking or growing?

Explanation:

1. Pottsburg

A. Number of births

Step1: Recall CBR formula

CBR (Crude Birth Rate) is calculated as $\frac{\text{Number of Births}}{\text{Population}} \times 1000$. So, $\text{Number of Births} = \frac{\text{CBR} \times \text{Population}}{1000}$.

Step2: Substitute values

CBR = 16, Population = 624100. So, $\text{Number of Births} = \frac{16 \times 624100}{1000} = 16 \times 624.1 = 9985.6$.

Step1: Recall CDR formula

CDR (Crude Death Rate) is $\frac{\text{Number of Deaths}}{\text{Population}} \times 1000$. So, $\text{Number of Deaths} = \frac{\text{CDR} \times \text{Population}}{1000}$.

Step2: Substitute values

CDR = 18, Population = 624100. So, $\text{Number of Deaths} = \frac{18 \times 624100}{1000} = 18 \times 624.1 = 11233.8$.

Step1: Recall NIR formula

NIR = $\frac{\text{CBR} - \text{CDR}}{10}$.

Step2: Substitute values

CBR = 16, CDR = 18. So, NIR = $\frac{16 - 18}{10} = \frac{-2}{10} = -0.2$.

Answer:

9985.6

B. Number of deaths