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Through observation, survey, or secondary data
A Census is the type of survey for a complete population. A Sample Survey is only a portion of the population which is used to make predictions on the representation of the actual population.
Blocking is more for experimental design while strata is for survey sampling.
Biased- (Not random) Unbiased-(Random) Example: (ubbiased) Woman takes random people to take a survey.
The main difference is that the way of selecting a sample Random sample purely on randomly selected sample,in random sample every objective has a an equal chance to get into sample but it may follow heterogeneous,to over come this problem we can use stratified Random Sample Here the difference is that random sample may follow heterogeneity and Stratified follows homogeneity
Form is used for Observation on the other hand, questionnaire is used for Survey method.
difference between survey and experiment
Market survey can be done using different techniques such as preparing questionnaires,direct contact with customers whereas in market observation the needs and wants of the customers are simply done by observing as to what they buy or what do they prefer
The words, observation and survey, each have several different meanings, but they also have a meaning that is similar. One definition of observation and survey is the act of observing, looking or seeing. Another definition for observation is the act of noticing something. Another definition for survey is the act of making an inspection.
differentiate between field experiment and survey and advantages
A survey is the process of collecting real world scientific data.
Face left observation(In theodolite survey):If the face of the vertical circle is to the left of the observer, the observation of the angle is known as Face left observationFace Right observation(In theodolite survey):If the face of the vertical circle is to te right of the observer, the observation of the angle is known as Face right observation
Face left observation(In theodolite survey):If the face of the vertical circle is to the left of the observer, the observation of the angle is known as Face left observationFace Right observation(In theodolite survey):If the face of the vertical circle is to te right of the observer, the observation of the angle is known as Face right observation
Traverse survey can change to any shape which accommodate a great deal of different terrain while Triangulation survey is fixed to use of triangles
Traverse survey can change to any shape which accommodate a great deal of different terrain while Triangulation survey is fixed to use of triangles
The difference between without prejudice survey and survey on without prejudice basis is without prejudice survey or WP survey means the survey carried out to the third party in order to obtain any damage to them while the survey on WP basis means the survey carried out for investigate the incident on third party. In simple word, the WP survey carried out for Damage to third party while the survey on WP basis carried out in relation to investigation to thisrd party.
Face left observation(In theodolite survey):If the face of the vertical circle is to the left of the observer, the observation of the angle is known as Face left observationFace Right observation(In theodolite survey):If the face of the vertical circle is to te right of the observer, the observation of the angle is known as Face right observation