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Multilingual Demographic Dictionary, second unified edition, English volume

Difference between revisions of "Trend"

Multilingual Demographic Dictionary, second unified edition, English vol.
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(Etienne van de Walle et al., second 1982 edition)
(Etienne van de Walle et al., second 1982 edition)
 
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{{NewLineT|S=150|N=3}} {{
 
{{NewLineT|S=150|N=3}} {{
 
TofT|Lang=en|Ed=II|N=3|Color=yes|Te=fluctuation}}{{
 
TofT|Lang=en|Ed=II|N=3|Color=yes|Te=fluctuation}}{{
TofT|Lang=en|Ed=II|N=3|SubN=2|Te=deviation}}{{
+
TofT|Lang=en|Ed=II|N=3|SubN=2|Te=variation}}{{
TofT|Lang=en|Ed=II|N=3|SubN=3|Te=frequency cell}}{{
+
TofT|Lang=en|Ed=II|N=3|SubN=3|Te=deviation}}{{
 
TofT|Lang=ar|Ed=II|N=3|Te=تقلبات}}{{
 
TofT|Lang=ar|Ed=II|N=3|Te=تقلبات}}{{
 
TofT|Lang=ar|Ed=II|N=3|SubN=2|Te=تغيرات}}{{
 
TofT|Lang=ar|Ed=II|N=3|SubN=2|Te=تغيرات}}{{
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TofT|Lang=zh|Ed=II|N=4|SubN=2|Te=周期性波动}}
 
TofT|Lang=zh|Ed=II|N=4|SubN=2|Te=周期性波动}}
 
{{NewLineT|S=150|N=5}} {{
 
{{NewLineT|S=150|N=5}} {{
TofT|Lang=en|Ed=II|N=5|Color=yes|Te=seasonal fluctuations.}}{{
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TofT|Lang=en|Ed=II|N=5|Color=yes|Te=seasonal fluctuations}}{{
 
TofT|Lang=ar|Ed=II|N=5|Te=حركات موسمية}}{{
 
TofT|Lang=ar|Ed=II|N=5|Te=حركات موسمية}}{{
 
TofT|Lang=ar|Ed=II|N=5|SubN=2|Te=تقلبات موسمية}}{{
 
TofT|Lang=ar|Ed=II|N=5|SubN=2|Te=تقلبات موسمية}}{{
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|150_2_1_en_II Trend.ogg|'''trend'''  
 
|150_2_1_en_II Trend.ogg|'''trend'''  
 
|150_3_1_en_II Fluctuation.ogg|'''fluctuation'''  
 
|150_3_1_en_II Fluctuation.ogg|'''fluctuation'''  
|150_3_2_en_II Deviation.ogg|'''deviation'''  
+
|150_3_2_en_II Variation.ogg|'''variation'''  
|150_3_3_en_II Frequency cell.ogg|'''frequency cell'''  
+
|150_3_3_en_II Deviation.ogg|'''deviation'''  
 
|150_4_1_en_II Cyclical fluctuation.ogg|'''cyclical fluctuation'''  
 
|150_4_1_en_II Cyclical fluctuation.ogg|'''cyclical fluctuation'''  
 
|150_4_2_en_II Period fluctuation.ogg|'''period fluctuation'''  
 
|150_4_2_en_II Period fluctuation.ogg|'''period fluctuation'''  
|150_5_1_en_II Seasonal fluctuations..ogg|'''seasonal fluctuations.'''  
+
|150_5_1_en_II Seasonal fluctuations.ogg|'''seasonal fluctuations'''  
 
|150_6_1_en_II Irregular fluctuation.ogg|'''irregular fluctuation'''  
 
|150_6_1_en_II Irregular fluctuation.ogg|'''irregular fluctuation'''  
 
|150_7_1_en_II Chance fluctuations.ogg|'''chance fluctuations'''  
 
|150_7_1_en_II Chance fluctuations.ogg|'''chance fluctuations'''  
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[[en-II:trend]] [[ar-II:إتجاه]] [[cs-II:trend]] [[de-II:Trend]] [[es-II:tendencia]] [[fr-II:tendance]] [[it-II:tendenza generale]] [[ja-II:趨勢(トレンド)]] [[pt-II:tendência]] [[ru-II:Тенденция]] [[zh-II:趋势]]  
 
[[en-II:trend]] [[ar-II:إتجاه]] [[cs-II:trend]] [[de-II:Trend]] [[es-II:tendencia]] [[fr-II:tendance]] [[it-II:tendenza generale]] [[ja-II:趨勢(トレンド)]] [[pt-II:tendência]] [[ru-II:Тенденция]] [[zh-II:趋势]]  
 
</noinclude>
 
</noinclude>
 +
{{DEFAULTSORT:Trend}}
 
<noinclude>
 
<noinclude>
 
[[Category:Term of the second edition of the multilingual demographic Dictionary]]
 
[[Category:Term of the second edition of the multilingual demographic Dictionary]]

Latest revision as of 06:02, 5 February 2010

Trend  (TREND)


When values of a demographic variable are available over time, a demographic time series 1 is obtained. It is sometimes possible to decompose a time series into a trend 2 around which there are fluctuations 3, variations 3, or deviations 3 (141-2). Where such fluctuations tend to recur after certain periods, usually several years, they are called cyclical fluctuations 4 or, more generally, period fluctuations 4. In demography the most common period for compiling data is a year, and the fluctuations in sub-periods of a year are called seasonal fluctuations 5. The fluctuations that remain after trend, cyclical, and seasonal fluctuations have been eliminated are called irregular fluctuations 6. They may be due to exceptional factors such as wartime mobilization, or sometimes they are chance fluctuations 7 or random fluctuations 7.

  • 3. In a general sense the term variation may be used to describe change in any value or set of values for a variable.
  • 4. Periodic, adj. - period, n. - periodicity, n. cyclical, adj. - cycle, n.
  • 7. Random, adj.: due to chance (cf. 161-1).

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