CN202331619U - Random sampler for statistically sampling - Google Patents
Random sampler for statistically sampling Download PDFInfo
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- CN202331619U CN202331619U CN2011204927441U CN201120492744U CN202331619U CN 202331619 U CN202331619 U CN 202331619U CN 2011204927441 U CN2011204927441 U CN 2011204927441U CN 201120492744 U CN201120492744 U CN 201120492744U CN 202331619 U CN202331619 U CN 202331619U
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- sampling
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Abstract
本实用新型涉 及一种统计学抽样用随机取样机，目前的抽样主要采用人工取样，样本的代表性容易受人为因素的影响，致使抽样误差较大，影响科学研究的准确性。本实用新型的组成包括：总样本桶（ 1 ），所述的总样本桶上连接上盖（ 2 ），所述的总样本桶中间安装总搅拌机（ 3 ），所述的总样本桶上具有最终出口（ 4 ），所述的总样本桶里面安装一组分类样本桶（ 5 ），每个所述的分类样本桶里面安装小搅拌机（ 6 ），每个所述的分类样本桶上具有分类样本出口（ 7 ），每个分类样本桶里面装有一组代表球（ 8 ）。本实用新型用于统计学研究中的取样。
The utility model relates to a random sampling machine for statistical sampling. The current sampling mainly adopts manual sampling, and the representativeness of samples is easily affected by human factors, resulting in large sampling errors and affecting the accuracy of scientific research. The composition of the utility model includes: a total sample barrel ( 1 ), the upper cover ( 2 ) is connected to the total sample barrel , a total mixer ( 3 ) is installed in the middle of the total sample barrel, and the total sample barrel has The final outlet ( 4 ), a group of classified sample barrels ( 5 ) are installed in the total sample barrel , a small mixer ( 6 ) is installed in each of the classified sample barrels , and each classified sample barrel has a classification A sample outlet ( 7 ), and a group of representative balls ( 8 ) are housed in each classified sample bucket. The utility model is used for sampling in statistical research.
Description
Technical field:
the utility model relates to a kind of statistics sampling and uses the grab sample machine.
Background technology:
are in order to be applied to statistics on science, industry and the social concern; Statistics is begun by the research parent usually; But because actual restriction; Usually can not study each individuality in the parent, select each document of the subclass replacement research parent of research parent in the reality usually, this sub-set is called sample.Accidentalia owing to random sampling in the sampling process makes the structure of sample constituent parts be not enough to represent the structure of overall constituent parts, and causes that sampling index and the absolute dispersion that reaches entirely between the index are called sampling error.The factor that influences sampling error has: the difference degree of overall constituent parts value of statistical indicant, the units of sample, the method for sampling, the organizational form of sample survey etc.; Sample index's representative low to overall objective do not possess researching value if sampling error is too big.Hand sampling is mainly adopted in present sampling, and the representativeness of sample receives artificial factor easily, causes sampling error bigger, influences the accuracy of scientific research.
Summary of the invention:
The purpose of
the utility model is that the problem that is directed against above-mentioned existence provides a kind of statistics sampling to use the grab sample machine, can effectively reduce sampling error, improves the representativeness of sample.
Above-mentioned purpose realizes through following technical scheme:
The grab sample machine is used in the sampling of
statistics, and its composition comprises: total sample barrel connects loam cake on described total sample barrel; In the middle of described total sample barrel total stirring machine is installed; Have final outlet on described total sample barrel, a group categories sample barrel is installed in described total sample barrel the inside, and little stirring machine is installed in each described classification samples bucket the inside; Have the classification samples outlet on each described classification samples bucket, be equipped with one group inside each classification samples bucket and represent ball.
Beneficial effect:
are being represented maternal class mark on the ball earlier when 1. the utility model is taken a sample; Be contained in then in each classification samples bucket; Along with on behalf of ball, the stirring of little stirring machine export out from classification samples at random to drop on total sample barrel; Under the stirring of total stirring machine, the representative ball in the total sample barrel final outlet from total sample barrel at random comes out to be called the sample of choosing, the phenomenon that the sampling error of having avoided hand sampling to cause is excessive.
2. the utility model is simple in structure, makes easy to use.
Description of drawings:
accompanying drawing 1 is the structural representation of the utility model.
Embodiment:
Embodiment 1:
The grab sample machine is used in the sampling of
statistics; Its composition comprises: total sample barrel 1; Connect loam cake 2 on described total sample barrel, in the middle of described total sample barrel total stirring machine 3 is installed, have final outlet 4 on described total sample barrel; A group categories sample barrel 5 is installed in described total sample barrel the inside; Little stirring machine 6 is installed in each described classification samples bucket the inside, has classification samples outlet 7 on each described classification samples bucket, is equipped with one group inside each classification samples bucket and represents ball 8.
Claims (1)
1. the grab sample machine is used in a statistics sampling, and its composition comprises: total sample barrel is characterized in that: connect loam cake on described total sample barrel; In the middle of described total sample barrel total stirring machine is installed; Have final outlet on described total sample barrel, a group categories sample barrel is installed in described total sample barrel the inside, and little stirring machine is installed in each described classification samples bucket the inside; Have the classification samples outlet on each described classification samples bucket, be equipped with one group inside each classification samples bucket and represent ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204927441U CN202331619U (en) | 2011-12-02 | 2011-12-02 | Random sampler for statistically sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204927441U CN202331619U (en) | 2011-12-02 | 2011-12-02 | Random sampler for statistically sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331619U true CN202331619U (en) | 2012-07-11 |
Family
ID=46443591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204927441U Expired - Fee Related CN202331619U (en) | 2011-12-02 | 2011-12-02 | Random sampler for statistically sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202331619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134199A (en) * | 2017-07-18 | 2017-09-05 | 刘德平 | A kind of maths game instructional device |
-
2011
- 2011-12-02 CN CN2011204927441U patent/CN202331619U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134199A (en) * | 2017-07-18 | 2017-09-05 | 刘德平 | A kind of maths game instructional device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Harbin University of Commerce attached refrigeration equipment factory Assignor: Harbin University of Commerce Contract record no.: 2012230001624 Denomination of utility model: Random sampler for statistically sampling Granted publication date: 20120711 License type: Exclusive License Record date: 20120822 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121202 |