...the {{NonRefTerm|school-age population}} (cf. {{RefNumber|34|6|7}}), the {{NonRefTerm|marriageable population}} (cf. {{RefNumber|51|4|2}})]. Such groups are prop ...graphy, mathematical...}}. A piece of research that applies the tools of {{NonRefTerm|demographic analysis}} ({{RefNumber|10|3|1}}) to an actual population is of

...tional standard a household consists of a group of individuals who share {{NonRefTerm|living quarters}} ({{RefNumber|12|0|1}}) and their principal meals. The ter ...s, prisons, etc.). They may also include unrelated persons who reside in {{NonRefTerm|group quarters}} ({{RefNumber|12|0|1}}*) other than institutions. However,

...such observations have been {{TextTerm|collected|4|130}} on appropriate {{NonRefTerm|forms}} ({{RefNumber|20|6|1}}), the documents are {{TextTerm|edited|5|130|I ...ndexEntry=data, crude ...}} prior to their {{NonRefTerm|processing}} and {{NonRefTerm|tabulation}} and {{TextTerm|basic data|1|131|3|OtherIndexEntry=data, basic

...e, interquartile ...}} is the difference between the first and the third {{NonRefTerm|quartiles}} ({{RefNumber|14|2|2}}) and contains half the observations in th {{Note|9| The common notation for the standard deviation is {{NonRefTerm|σ}}.}}

...ons}} ({{RefNumber|43|1|6}}) for example, which can be used directly for {{NonRefTerm|population forecast}} (cf. {{RefNumber|72|0|2}}). When a population is clas ...variables is often called a {{TextTerm|diagram|4|155}}, for example the {{NonRefTerm|Lexis Diagram}} (cf. 437). A graph in which one co-ordinate axis is graduat

...{RefNumber|11|0|2}}), {{NonRefTerm|families}} ({{RefNumber|11|5|1}}), or {{NonRefTerm|households}} ({{RefNumber|11|0|3}}) and sampling units may be individuals, ...^th, ..., etc. unit, where {{NonRefTerm|n}} is not larger than {{NonRefTerm|s}} and is selected at random. In {{TextTerm|cluster sampling|8|161|OtherIn

...ment between the population studied and other populations, but logically {{NonRefTerm|migration statistics}} ({{RefNumber|81|2|1}}) are a part of the statistics ...Entry=census, population ...}} are taken to obtain information about the {{NonRefTerm|state of the population}} ({{RefNumber|20|1|8}}) at a given time. Most comm

...OtherIndexEntry2=system, civil registration ...}} are the descendents of {{NonRefTerm|registers}} ({{RefNumber|21|4|1}}) kept by religious groups. A register was The {{NonRefTerm|registers}} mentioned in a preceding paragraph (cf. {{RefNumber|21|1|4}}) a

...220}} of the data, {{NonRefTerm|tabulation}} ({{RefNumber|13|0|6}}*) and {{NonRefTerm|calculation}} ({{RefNumber|13|2|2}}) and {{TextTerm|table preparation|9|220 ...Entry=check, consistency ...}}; these can be internal checks within each {{NonRefTerm|statistical unit}} (cf. {{RefNumber|11|0|1}}) or may result from the compar

...erIndexEntry2=distribution of the population, spatial ...}}, and also by {{NonRefTerm|structure}} ({{RefNumber|14|4|4}}). Each population lives in a given {{Text ...xtTerm|natural area|7|302|OtherIndexEntry=area, natural ...}} is used in {{NonRefTerm|human ecology}} ({{RefNumber|10|4|5}}) to define an area occupied by a popu

...his actual {{NoteTerm|residence}}. In the United States of America, the {{NonRefTerm|de jure}} population is the population of {{NoteTerm|usual residence|OtherI ...on should not be confused with {{NonRefTerm|agricultural population}} or {{NonRefTerm|farm population}} ({{RefNumber|35|9|2}}).}}

...number of males to the number of females; it is usually expressed as an {{NonRefTerm|index value}} ({{RefNumber|13|2|7}}) i.e. the number of males per 100 femal ...IndexEntry=woman}} to refer to persons of each sex at all ages including {{NonRefTerm|children}} ({{RefNumber|32|3|3}}). In a similar fashion the terms {{TextTer

{{Note|4| The {{NonRefTerm|school-age population}} ({{RefNumber|34|6|7}}) is often classifed by grade ...dexEntry=professional school|OtherIndexEntry=school, professional ...}}. {{NonRefTerm|Technical education}} ({{RefNumber|34|3|12}}) is given in {{NewTextTerm|le

...mic ...}}, is an activity which contributes to the production of income. {{NonRefTerm|Unpaid family workers}} ({{RefNumber|35|3|5}}) are usually included in the ...activity, are most often classified as not in the labor force under the {{NonRefTerm|gainful worker concept}} ({{RefNumber|35|0|1}} *). The {{NewTextTerm|employ

...erm|sub-population}} ({{RefNumber|10|1|6}}) only is studied, we speak of {{NonRefTerm|specific death rates}} ({{RefNumber|13|4|6}}) among which {{TextTerm|sex-ag ...ge of several estimates of the size of the population for each year. The {{NonRefTerm|average number of persons years}} ({{RefNumber|13|5|6}}) is also used as de

...fTerm|product of conception}} ({{RefNumber|60|2|6}}) irrespective of the {{NonRefTerm|duration of pregnancy}} ({{RefNumber|60|3|3}}). The terms {{TextTerm|intra- ...}}. These terms include {{NonRefTerm|abortions}} ({{RefNumber|60|3|5}}), {{NonRefTerm|miscarriages}} ({{RefNumber|60|4|1}}) and stillbirths.}}

...NonRefTerm|disability}} ({{RefNumber|42|6|2}}) may be the consequence of {{NonRefTerm|disease}} ({{RefNumber|42|0|2}}) or of {{TextTerm|injury|1|422}} or {{TextT {{Note|1| {{NonRefTerm|Infant mortality}} ({{RefNumber|41|0|1}}) can thus be decomposed into {{Not

Mortality statistics are generally compiled from death registration (cf. {{NonRefTerm|211}}). When a death takes place a {{TextTerm|death certificate|1|430|Other ...viving}} among {{NonRefTerm|children ever born}} ({{RefNumber|63|7|2}}), {{NonRefTerm|reporting of sibling deaths}}, {{NoteTerm|orphanhood status|OtherIndexEntry

...lution of such unions. By extension, it also includes the study of other {{NonRefTerm|conjugal unions}} ({{RefNumber|50|3|8}}) where their frequency makes their ...2|OtherIndexEntry=marry, intent to ...}} is a necessary preliminary to a {{NonRefTerm|marriage}} ({{RefNumber|50|1|4}}), giving public notice to persons interest

...Term|divorce|1|511}} as an institution is recognized, the dissolution of {{NonRefTerm|marriage}} ({{RefNumber|51|0|2}}) may take place through the granting of a ...one of the {{NonRefTerm|spouses}} ({{RefNumber|50|1|5}}) may bring about {{NonRefTerm|dissolution of the marriage}} ({{RefNumber|51|0|3}}). Under any legal syste

...marriage ...}}, which relates the number of {{NonRefTerm|bachelors}} or {{NonRefTerm|spinsters}} ({{RefNumber|51|5|3}} and 4) marrying to the total number of ba ...ortality as well as nuptiality into account, and is a particular case of {{NonRefTerm|double decrement tables}} ({{RefNumber|15|3|4}}). Such a table includes the

...born ...|OtherIndexEntry2=born, live-born child}} are distinguished from {{NonRefTerm|late foetal deaths}} (cf. {{RefNumber|41|1|5}}) by evidence of life, such a ...rIndexEntry=insemination, artificial ...}}, i.e. by a process other than {{NonRefTerm|coitus}} ({{RefNumber|62|7|2}}).}}

...the marital status of the mother at the time of the birth or, after the {{NonRefTerm|dissolution of marriage}} ({{RefNumber|51|0|3}}), at the time of conception ...ate, such as that of a {{NonRefTerm|census}} ({{RefNumber|20|2|1}} *) or {{NonRefTerm|survey}} ({{RefNumber|20|3|4}}), is called an {{TextTerm|open birth interva

...tive period is often made to start, by convention, at 15 years or at the {{NonRefTerm|minimum age at marriage}} ({{RefNumber|50|4|1}}) and, for some, to end at 4 ...er|60|2|1}}) to the return of ovulation after a delivery, which includes {{NonRefTerm|pregnancy}} ({{RefNumber|60|2|5}}) and is influenced by the duration of {{T

...minator to the women of the {{NonRefTerm|parity}} ({{RefNumber|61|1|6}}) {{NonRefTerm|at risk}} ({{RefNumber|13|4|2}}), e.g., second order births to one-parity w ...ndexEntry=fertility, marital ...}} it is possible to arrange the data by {{NonRefTerm|marriage cohorts}} ({{RefNumber|11|6|2}}) of the mothers, and {{TextTerm|ma

...lation the numbers in a given age group are equal to the integral of the {{NonRefTerm|survivorship function}} ({{RefNumber|43|1|3}}) of the life table taken betw

...reproduction|1|710|OtherIndexEntry=reproduction, population...}} (see § {{NonRefTerm|116}}) treats population as a {{TextTerm|renewable resource|2|710|OtherInde ...aring age in the actual population, to the corresponding quotient in the {{NonRefTerm|stationary population}} ({{RefNumber|70|3|6}}).

...on the basis of a previous census, the excess of births over deaths, and {{NonRefTerm|net migration}} ({{RefNumber|80|5|2}}) during the intercensal period. This

...o moves made by persons without a fixed place of residence, for example, {{NonRefTerm|nomads}} are excluded from the count of migrants in many countries. In prac ...inguished from {{NonRefTerm|social mobility}} ({{RefNumber|92|0|4}}) and {{NonRefTerm|occupational mobility}} ({{RefNumber|92|1|3}}).}}

...=traveller}}, who do not change their place of residence, and persons in {{NonRefTerm|transit}} {{RefNumber|80|1|11}}). The number of {{TextTerm|visas|9|812|Inde ...imate net migration by age; it does not require actual death statistics. {{NonRefTerm|Survival ratios}} are derived from life tables and are applied to a sub-pop

...fTerm|population growth}} ({{RefNumber|70|1|1}}) and its components, and {{NonRefTerm|economic growth}} ({{RefNumber|90|3|1}}), particularly with respect to {{Te ...ny change in the volume of available means of subsistence would generate {{NonRefTerm|population growth}} ({{RefNumber|70|1|1}}) until {{TextTerm|population equi

...ls or {{TextTerm|gametes|6|911|IndexEntry=gamete}} during the process of {{NonRefTerm|conception}} ({{RefNumber|60|2|1}}) is called a {{TextTerm|zygote|7|911}}. ...so because of its relatively low efficiency in reducing the frequency of {{NonRefTerm|recessive genes}} ({{RefNumber|91|2|6}}). Among the measures proposed, {{Te

...n the problems of {{NonRefTerm|aged persons}} ({{RefNumber|32|4|8}}) and {{NonRefTerm|aging}} ({{RefNumber|32|6|3}}) has given rise to a special branch of studie

...{NonRefTerm|mortality}} ({{RefNumber|40|1|1}}), is an other component of {{NonRefTerm|population policy}}. ...nRefTerm|parturient}} ({{RefNumber|60|3|4}}*) women may help in reducing {{NonRefTerm|late foetal, infant and maternal mortality}} (cf. 410, 411, 413, and {{RefN

...osimulation}} may for example involve population projections made by the {{NonRefTerm|component method}} ({{RefNumber|72|0|5}}). In {{TextTerm|microsimulations|8