بعض تطبيقات الاحصاء الحياتي

Collect, compile and organize data

 


That any scientific research based on the analysis to a statistical method requires data on the research topic under study and the data can be obtained from two sources:
 


A - Historical sources

The data and information stored and accumulated, and accumulated Ajhzat and different state institutions as a result of phase carried out by these bodies or certain bodies for the purposes of their own example of this census data, statistics, agricultural and industrial production, foreign trade statistics and the Interior, statistics students graduating from universities in Iraq and elsewhere.


B - Sources on the ground.

 If you can not get that data from historical sources, let us go into the field to obtain such data, any access to the data from original sources is done by following one of two methods the following two.


 1 - complete enumeration

     Under this approach taken All data collection on all items statistical community, in this case must be a specific statistical community, which can be seen every single faithful, for example, that the general census of population or limit the activities of the industrial units in Iraq.
    The style is the overall best method of data collection because it prepares the researcher complete data for all items of the study, but it takes time, effort and material resources and human resources in accomplishing the task of collecting data in addition to the possibility of falling into the errors as a result of dealing with the vocabulary of statistical community as a whole.


2 - the style of the samples.

    And is intended to collect data and information on a specific set of vocabulary statistical community, and invited this group of vocabulary so that the sample be selected in a manner to ensure statistical representation of the community accurately and advantages of this method follows:
 *- Does not need to effort, time and material resources and human resources.
*- Can be used in the case of communities is limited.
*- Access to information about the characteristics of more than style to Ostkhaddm comprehensive.
*- The possibility of testing the accuracy of the results.