1 Job Vacancies, Australia Methodology
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As the estimates in this release are based on information associating with a sample of companies rather than a complete enumeration, they go through tasting irregularity. That is, they may differ from the quotes that would have been produced if the information had been obtained from all companies. This distinction, called tasting mistake, ought to not be puzzled with error that may occur because of flaws in reporting by respondents or in processing by the ABS. Such inaccuracy is described as non-sampling mistake and may happen in any enumeration whether it be a full count or sample. Efforts have actually been made to reduce non-sampling mistake by cautious style of questionnaires, in-depth checking of returns and quality control of processing.
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The sampling error connected with any quote can be approximated from the sample results. One measure of sampling error is provided by the which shows the degree to which a quote may vary from the value which would have been acquired from a full enumeration (the 'real worth'). There are about two chances in 3 that a sample price quote differs from the true worth by less than one basic error, and about 19 opportunities in 20 that the difference will be less than 2 basic errors.

An example of using a standard mistake on levels is as follows. If the estimated number of job vacancies was 25,000 with a standard error of 2,500, then there would have to do with 2 chances in three that a full enumeration would have offered an estimate in the range 22,500 to 27,500 and about 19 chances in 20 that it would remain in the variety 20,000 to 30,000.
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An example of the usage of a standard mistake for a quarterly modification quote is as follows. If the approximated standard error for a quarterly change quote of job vacancies was 1,000 and the quarterly modification quote in between two quarters was 4,500, then there would be about 2 possibilities in three that a complete enumeration would have given a quarterly change price quote in the variety +3,500 to +5,500 and about 19 opportunities in 20 that it would be in the variety +2,500 to +6,500.

Quarterly movements in price quotes of job vacancies are considered to be statistically considerable where they go beyond two standard errors.

Another step of the sampling mistake (for level approximates only) is the relative basic mistake, which is gotten by revealing the standard mistake as a portion of the estimate to which it refers. Level estimates with a relative basic error between 25% and 50%, signified by an asterisk in this release, go through sampling irregularity generally considered to be too high for many practical purposes and need to be utilized with care. Level approximates with a relative standard mistake of 50% or more, represented by a double asterisk, are considered to be too unreliable for basic usage.

The following two tables shows the basic errors for quarterly level and movement for States and territories by Sector, based on initial information for the existing quarter. The third table shows the standard mistakes for level quotes by market.