Essay about Sampling
Carrying out a survey of every single potential consumer (known as population) of a firm's product would be impractical, timeconsuming and costly. Businesses still, however, need to collect enough primary data to have a clear idea of the views of consumers. This can be done by taking a sample of the population. This sample group should be made up of consumers that are representative of all potential buyers of the product. There are a number of ways in which a sample can be chosen.
Random Sampling
This method gives each member of a group an equal chance of being chosen. In other words, the sample is selected at random, rather like picking numbers out of a hat. Today computers can …show more content…
Quota Sampling
This sampling method involves the population being segmented into a number of groups which share specific characteristics. These may be based on the age and the sex of the population. Interviewers are then given targets for the number of people out of each segment who they must interview. For example, and interviewer may be asked to interview 10 males between the ages of 18 and 25, or 15 females between the ages of 45 and 60. Once the target is reached, no more people from that group are interviewed. The advantage of this sampling method is that it can be cheaper to operate than many of the others. It is also useful where the proportions of the different groups within the population are known. However, results from quota sampling are not statistically representative of the population and are not randomly chosen. They must therefore be treated with caution.
Cluster Sampling
This involves

Sampling Methods Essay
1025 Words  5 PagesSampling Methods A great deal of sociological research makes use of sampling. This is a technique aiming to reduce the number of respondents in a piece of research, whilst retaining  as accurately as possible  the characteristics of the whole group. The purpose of taking a sample is to investigate features of the population in greater detail than could be done if the total population was used, and to draw inferences about this population. In addition, at the…

Sampling Design
3357 Words  14 Pagesfrom a population is known as sample design. It describes various sampling techniques and sample size. It refers to the technique or procedure the researcher would adopt in selecting items for the sample. STEPS IN SAMPLE DESIGN Type of universe Sampling unit Source List Size of Sample Parameters of Interest Budgetary Constraint Sampling Procedure CRITERIA OF SELECTING A SAMPLING PROCEDURE Inappropriate sampling frame Defective measuring device NonRespondents Indeterminancy…

Sampling Methods Essay
2036 Words  9 PagesSampling is the framework on which any form of research is carried out. A suitable sample that meets the inclusion and exclusion criteria of a research design must be chosen from a given population to carry out studies. In this essay comparison is made between stratified random sampling and convenience sampling. The population on which the researcher is interested in carrying out his or her research may be too large, therefore a suitable sample which can represent the population in correct proportion…

Random Sampling
11805 Words  48 Pages(unpublished), © 2008. NOT FOR COMMERCIAL DISTRIBUTION 3 Simple Random Sampling 3.1 INTRODUCTION Everyone mentions simple random sampling, but few use this method for populationbased surveys. Rapid surveys are no exception, since they too use a more complex sampling scheme. So why should we be concerned with simple random sampling? The main reason is to learn the theory of sampling. Simple random sampling is the basic selection process of sampling and is easiest to understand. If everyone in a population could…

Audit Sampling
1960 Words  8 PagesReceivable balances for Key West Company as of 20X1. Our team has already completed a thorough evaluation of the company’s internal control and we believe they are excellent. Therefore, the team has decided to use the Probabilityproportionatetosize sampling theory, (PPS). We have used PPS to find the evidence required to prove there has been no materially misstatement in Key West Company’s accounts receivable accounts. The financial cycle is the cycles of business transactions, which involve the processing…

Sampling Techniques
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Auditors and Sampling Techniques
2845 Words  11 Pages1) Describe the conditions under which an auditor might choose to select a sampling technique, either statistical or nonstatistical, over a nonsampling technique and vice versa. Include examples from both tests of controls and tests of balances. a) Testing of Controls: i) When sampling is appropriate and why? Although there is an option not to generate a sample to test if the control is working effectively or not, it is rarely the case. For most controls being tested, it would be too costly…

Sampling Techniques
7669 Words  31 PagesCHAPTER 7—SAMPLING AND SAMPLING DISTRIBUTIONS MULTIPLE CHOICE 1. From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected? a.48 b.20,736 c.16 d.495 ANS: D 2. Parameters are a.numerical characteristics of a sample b.numerical characteristics of a population c.the averages taken from a sample d.numerical characteristics of either a sample or a population ANS:…

Essay on Simple Random Sampling
845 Words  4 Pagesprobability is one of the sampling techniques of choosing the equivalent elements. These are specified as random sampling. The sampling is helped to develop the sampling frame; it selects the elements as randomly. The sampling can be done through the replacement. The random sampling assumption can be accomplished by the Middle Limit Theory. Definition: The group of independent of options is known as random sampling. The random sampling has analogous independent…

Sampling Case Study
1737 Words  7 PagesSampling Case Studies Case Study 1 on Sampling Sampling Hispanic Adults by Telephone1 Problem: Researchers wanted to determine how aware adult Hispanics in the San Francisco area are of product warning messages and signs concerning cigarettes, alcoholic beverages, and other consumer products. The researchers needed to contact a sample of them to interview. A Solution: “Respondents were sampled using…random digit dialing. This procedure…avoids the use of directories with their inherent problem…
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