This parameter is essentially a

**per capita growth rate**, and is calculated as: r = b-d. "r" is variously referred to as the "**rate**of natural**increase**" or the "**per capita rate of increase**" of the population, or as the "**rate**of net reproduction**per**individual."1

## What is per capita birth rate?

To determine

**per capita birth**or death**rates**, you simply divide the absolute number of**births**("B") or deaths ("D") by the number in the population ("N") at the midpoint of the time interval (usually year). By convention, for human demographics, we use the total number ("N") of people, regardless of age or sex.2

## What is the intrinsic rate of increase?

**Intrinsic rate of increase**. The

**rate**at which a population

**increases**in size if there are no density-dependent forces regulating the population is known as the

**intrinsic rate of increase**.

3

## What is the difference between the birth rate and fertility rate?

**Birth rate**is a parameter of the entire population, while

**fertility rate**is a parameter of a group of individuals

**in the**population.

**Fertility rate**determines the

**birth rate**but, not the other way around.

**Fertility rate**applies for females

**in the**reproductive age, but there is no such restriction for

**birth rate**.

4

## How do you measure population change?

The annual percentage growth rate is simply the percent growth divided by N, the number of years. In 1980, the

**population**in Lane County was 250,000.5

## What is K in population growth?

The term for

**population growth**rate is written as (dN/dt). The d just means change.**K**represents the carrying capacity, and r is the maximum per capita**growth**rate for a**population**. Per capita means per individual, and the per capita**growth**rate involves the number of births and deaths in a**population**.6

## What is R in population growth?

Exponential

**growth**is continuous**population growth**in an environment where resources are unlimited; it is density-independent**growth**. dN/dt = rN where, dN/dt = change in**population**size;**r**= intrinsic rate of**increase**(= per capita rate of**increase**and equals birth rate minus death rate); N =**population**size.7

## How do you calculate net migration?

The

**net migration**rate is the difference between the number of immigrants (people coming into an area) and the number of emigrants (people leaving an area) throughout the year. When the number of immigrants is larger than the number of emigrants, a positive**net migration**rate occurs.8

## How do you calculate per capita income?

**Per capita**income, also known as income

**per**person, is the mean income of the people in an economic unit such as a country or city. It is

**calculated**by taking a measure of all sources of income in the aggregate (such as GDP or Gross national income) and dividing it by the total population.

9

## What does DN DT mean in words?

Exponential growth is continuous population growth in an environment where resources are unlimited; it is density-independent growth.

**dN**/**dt**= rN where**dN**/**dt**= change in population size; r = instrinsic rate of increase (= per capita rate of increase and equals birth rate minus death rate); N = population size.10

## What is the formula for infant mortality rate?

(Crude) live birth rate = | Total number of live births Total population | 1,000 |
---|---|---|

Postneonatal mortality rate = | Number of postneonatal deaths Total number of live births | 1,000 |

Infant mortality rate = | Number of infant deaths Total number of live births | 1,000 |

11

## How do you find the doubling time of a population?

**Doubling time**is the amount of

**time**it takes for a given quantity to double in size or value at a constant growth rate. We can find the

**doubling time**for a population undergoing exponential growth by using the Rule of 70. To do this, we divide 70 by the growth rate (r).

12

## How do you calculate the per capita?

To find that rate, simply divide the number of murders by the total population of the city. To keep from using a tiny little decimal, statisticians usually multiply the result by 100,000 and give the result as the number of murders

**per**100,000 people.13

## What is per capita growth?

**Per capita**GDP is a measure of the total output of a country that takes the gross domestic product (GDP) and divides it by the number of people in that country. A rise in

**per capita**GDP signals

**growth**in the economy and tends to reflect an

**increase**in productivity.

14

## What is a reproductive table?

A life history in which adults produce large numbers of offspring over many years; also known as iteroparity. Term.

**reproductive table**. Definition. An age-specific summary of the**reproductive**rates in a population.15

## Where is carrying capacity located in a logistic growth curve diagram?

When resources

**are**limited, populations exhibit**logistic growth**. In**logistic growth**,**population**expansion decreases as resources become scarce, leveling off when the**carrying capacity**of the environment is reached, resulting in an S-shaped**curve**.16

## How do you calculate the birth rate?

**How to Calculate Crude Birth Rate**

- Divide Midyear Population. The crude birth rate (CBR) is equal to the number of live births (b) in a year divided by the total midyear population (p), with the ratio multiplied by 1,000 to arrive at the number of births per 1,000 people.
- Write Out the Formula.
- Sample Equation.

17

## What is a carry capacity?

The

**carrying capacity**of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.18

## What are the different types of population?

Types. There are three types of population pyramids: expansive, constrictive, and stationary. Expansive population pyramids depict populations that have a larger percentage of people in younger

**age**groups. Populations with this shape usually have high fertility rates with lower life expectancies.