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| Tweet Topic Started: Nov 8 2017, 12:36 AM (4 Views) | |
| dinghl | Nov 8 2017, 12:36 AM Post #1 |
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The concept of error is central throughout all statistical work. Whenever there is a measurement Willis Reed Knicks Jersey , inference or decision making, the possibility of error is present. So, we have to deal with errors of measurement, errors of inference and decision making. It is useful to distinguish the two types of errors that may be present in statistical measurements, namely, systematic errors and random errors. Systematic errors are also called as non sampling errors and the random errors are also called sampling errors. The systematic errors as the term implies, causes a measurement to be incorrect in some systematic way. They are the errors involved in the procedures of a statistical investigation and may occur in the planning stages or during or after the collection process. Examples of cause of systematic error (or bias) are faulty design of a questionnaire (such as misleading or ambiguous questions) systematic mistakes in planning and carrying out the collection and processing of the data, non response and refusals by respondents to provide information and a great discrepancy between the sampling frame and the target Universe. If observations have arisen from a sample drawn from a statistical universe Walt Frazier Knicks Jersey , systematic errors are those that persist even when the sampling size is increased. As a generalization, these errors may be viewed as arising primarily from inaccuracies or deficiencies in the measuring instrument. On the other hand, random errors or sampling errors may be viewed as arising from the operation of a large number of uncontrolled factors, conveniently described by the term: chance. As an example of this type of error, if repeated random samples of the same size are drawn from a statistical universe (with replacement of each sample after it is drawn) than a particular statistic, such as the arithmetic mean, will differ from sample to sample. These sample menus tend to distribute themselves below and above the true population parameter (arithmetic mean), with small deviations between the statistics and the parameter occurring relatively frequently and large deviations occurring relatively infrequently. The word: “true” has quotation marks around it because it refers to the figure that would have been obtained through deviations occurring relatively infrequently. The word: “true” has quotation marks around it because it refers to the figure that would have been obtained through complete coverage of the universe. The difference between the mean of a particular sample and the population mean is said to be random error (or sampling error). The complete collection of factors that could explain why the sample mean differed from the population mean is unknown. Tracy McGrady Knicks Jersey , but we can conveniently sum them up altogether and refer to the difference as a random or chance error. Random errors are those that arise from differences found between the outcomes of trials (or samples) and the corresponding universe value using the same measurement procedures and instruments. The sizes of the differences indicate the reliability or precision. Random errors decrease on the average as sample size increases. It is precisely for this reason that people prefer a large sample of observations to a small one, all other things being equal; that is, since sampling errors are on the average smaller for large samples, the results are more reliable or more precise. It is required by the licensing act of 2003 that anyone who wishes to hold a personal licence in order to sell or authorize transactions of alcohol must qualify the BIIAB level 2 Award for Personal Licence Holders (APLH). There are various commercial centres delivering all the requirements, specifically APLH course, to fulfil the criteria of enabling one to achieve necessary licence. In the wake of the modern era things have been more simplified for the applicants. People tend to have pretty busy schedules to make time for a full day training at any one of the centres in person. Almost every vendor provides online personal licence course. All you need to do is register yourself, take a day’s training online and appear for the examination. The examination is even arranged by the vendors. The APLH course covers almost everything that one needs to know before he is deemed capable enough to legalise the sale of alcohol. The course makes you knowledgeable about the licensing act, the legalizing authorities Phil Jackson Knicks Jersey , offences related to the sale of alcohol, the power of the police pertaining to this issue, concentrations of alcohols and their effects on health besides making you aware about the abuse of alcohol. The main objective of the course is to make you competent enough for the industry involved in the retail of consumable liquor. A personal licence holder is much ahead of the others in the field of landing a suitable job in the industry. So, the bottom line is that course and training is very important. But it is highly unlikely that everybody will be able to do the formal training and take the course by being physically present at the training centres. This is where the online personal licence course comes in handy. All you need to have is a computer with an internet connection. Most of the providers of the service do a great job in putting up a comprehensive and interactive course online. Once you are enrolled and have paid the subscription fees, you gain the access to the particular vendor’s course material on its website. The different modules of the course are at your disposal all of the time. Additionally you are provided with handbooks containing all the information regarding the ALPH course. Online subscribers can also take online mock tests which are readily available on the site itself. These tests, if taken periodically, can boost the confidence of the applicants. You can extend your subscription if . Cheap NHL Jerseys Cheap Jerseys China Wholesale Jerseys China Wholesale Jerseys From China Wholesale Hockey Jerseys Cheap Jerseys Wholesale Cheap NFL Jerseys Cheap NFL Jerseys Wholesale Jerseys Wholesale NFL Jerseys |
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8:38 AM Jul 11