The main difference between a sample survey and a focused survey is the different methods of selecting survey units.

I. Reason:

The selection of key units in a focused survey is based on the criterion of whether the total number of signs of the key units accounts for the vast majority of the total number of signs of all the units to be determined, this criterion is objectively existing, so it is easy to determine.

The survey units in the sample survey are drawn from all the overall units according to the principle of randomness, and are not affected by human subjective factors. Typical units in a typical survey is based on the analysis of the overall situation of conscious sampling.

Second, the characteristics of the two:

1, the main features of the focus of the survey is: less input, the survey speed, the main situation reflected or the basic trend of the more accurate. 2, the main features of the sampling survey is: according to the principle of random sampling; the overall probability of each unit is a certain number of units being sampled; can be used with a certain probability to ensure that the error will be controlled within the prescribed range.

Sample survey and other differences between the focus of the survey:

I, the concept of different:

1, sample survey is based on the principle of randomness from the overall part of the unit of the actual data for the survey, based on the sample data to deduce the overall number of the corresponding indicators of a method of statistical analysis, it is a kind of non-comprehensive survey It is a non-comprehensive survey.

2, focusing on the survey refers to all survey respondents to select a part of the key units for investigation, the so-called key units, refers to those units in all the survey units accounted for only a small part of the proportion of the total number of sign value in the Lin Zhi accounted for the vast majority of the proportion of the total amount of sign value, that is, sign value of the proportion of the significant portion of the small number of units.

Second, the role of different:

1, sampling survey can measure some can not be a comprehensive survey and in the measurement or test of destructive things; the use of sampling inference method can be for a certain overall assumptions for checking to determine the truth of such assumptions.

2, the focus of the survey is to investigate the unit, you can investigate more items and indicators, to understand the more detailed situation, to obtain information in a timely manner; can enable the party and government leaders to grasp the basic situation as soon as possible, to identify problems, take measures to guide the work.