Quiz 1 Flashcards
(35 cards)
Define demography
The scientific study of human population
Define geodemography
The study of the interrelation of demography and geography (place)
Name data sources which helps demographers seek to know the levels and trends in a population
Censuses, birth and death records, surveys, visas, school registrations
Define “Count”
The absolute number of a population or any demographic event occurring in a specified area in a specified time, raw quantity
Define “Rate”
The frequency of demographic events in a population during a specified time period divided by the population “at risk” of the event occurring during that time period, assessing how common it is for an event to occur
Define “Ratio”
The relation of one population subgroup to another population subgroup
Define “Proportion”
The relation of a population subgroup to the entire population
What is a Cartogram?
A thematic map of a set of features, in which their geographic size is altered to be directly proportional to a selected ratio-level variable, such as population
What does it mean to say “spatial is special?”
Some data are spatial in that they are referring to a place or attributes at locations
Who is John Snow?
-Legendary figure in epidemiology; one of the earliest examples of using epidemiological methods to identify risk for Cholera and recommend preventative action
-went house to house in London asking about deaths of area residents who died of Cholera; documented that most deceased person had lived near or drunk from the Broad Street water pump (later this was proved not entirely true, he collaborated with people to prove all of this)
Population studies, Type I
Knowledge of non demographic events are used to understand demographic events
Population studies, Type II
Knowledge of demographic events are used to understand nondemographic events
List examples of Formal Demography demographic variables
Birth rate
Age composition
Population growth rate
List examples of nondemographic variables
Economic conditions
Climate
Abortion policy
Social class
Define “Cohort Measure”
A stat that measures events occurring to a cohort who are observed through time. The most commonly used cohort is the birth cohort-people born in the same year.
Define “period measure”
A stat that measures events occurring to all or part of a population during one period of time; the measure “takes a snapshot” of a population
Define “median age”
The median age is the age at which exactly half the population is older and half is younger
Define “sex ratio”
The number of males per 100 females
What is the age-dependency ratio?
The ratio of people in the dependent ages (under 15 and 65+) to those in the economically productive ages (15-64 years old) in a population
Under 15+ 65 and older / 15-64 pop * (K)
K equals 100
What is a population pyramid?
A pop pyramid graphically displays a population’s age and sex composition
What is population momentum?
The tendency of a highly fertile population that has been rapidly increasing in size to continue to do so for decades after the onset of even a substantial decline in fertility
Why was the citizenship question on the 2020 census significant?
People thought it would discourage immigrants from answering and therefore lead to miscounts; this would have massive effects on congressional seats for states as well as billions of $ in federal funding
Why will the year 2030 be a big year for the US?
-1 in 5 Americans will be 65 years and older
What is “agency” in terms of theories for international migration?
MICRO
Rational economic, micro-level cost benefit analysis, decision making models, emphasize human agency, migration as voluntary self-betterment
