write an essay on sampling techniques

Study for free with our range of university lectures! Different types of sampling techniques are used for drawing a sample plan.

57 - 74 Permanent link to this document: http://dx.doi.org/10.1108/10662241211199960 Downloaded on: 11-05-2012 References: This document contains references to 48 other documents, The study methods included a mixed approach, using a multiphase convergent parallel design. The simple random sample requires less knowledge about the population than other techniques of probability sampling, but it does have two major drawbacks. Planning technique aiming to reduce the number of respondents in a piece of An analysis of the formula shows that the required sample size will increase most rapidly if: (i) the confidence level (Z factor) is increased, or (ii) the precision level (d) is made smaller. 1st Jan 1970

characteristics of the whole group. Apart from that, it was also limited to students who owned and access to social networking site Facebook. The suitability of the census method requires very few conditions like- (i) where the area of study is very limited and is within the reach of the researcher, and/or (ii) the researcher is having enough time for covering the entire population, and/or (iii) the study is funded with adequate and sufficient finances to meet the expenses needed, and/or (iv) all the units of the population are behaving homogeneous characteristics, and/or (v) the study sought for adopting this specific method only. The most practical and economical method of selecting a random sample consists in the use of random numbers table which have been so constructed that each of the digits from 0,1,2… 9 appears with approximately the same frequency and independently with each other.

It refers to the technique or the procedure the researcher would adopt in selecting items for the sample. Systematic sampling relies on arranging the target population according to some ordering scheme and then selecting elements at regular intervals through that ordered list. I would like to The OSHA sampling and analytical method for chlorine is discussed in reference 9.1. Among various types of sample design technique, the researcher should choose that samples which are reliable and appropriate for his research study. The cleanroom can be defined as an environment, typically, they have been developed to include increasingly versatile and impressive functions over the past seventy years. DESIGN OF THE STUDY ... approaches rely on random sampling to draw inferences. 100 names out. selected, we can also easily calculate the probability, Introduction This method of data collection is rarely used by few researchers for some specific studies. If you need assistance with writing your essay, our professional essay writing service is here to help! If the area covered by a survey is very large (a country or a state) and the size of the population is quite large, then the size of sample should be large. There is usually a downward bias in the individual income data collected by the income tax department where as an upward bias is found in the income data collected by some social organizations. Looking for a flexible role? Out of the experiences, the researchers have opined various features/characteristics of a good sample. Copyright © 2000-2020. But the real problem arises while taking into account about the cost of incorrect inferences which is again of two types. The study selected records of patients as they were admitted in a consecutive manner until it reached a certain number. All rights reserved. Equally important to the size of the sample is the determination of the type of sampling techniques to be followed.

A sampling procedure that assures that each element in the population Using the ‘n’ of 370 calculated above, each of these strata should have the following sample sizes: * Business community, male 370 * 0.455 = 168.35 = 168, * Business community, female 370 * 0.195 = 72.15 = 72, * Government officer, male 370 * 0.245 = 90.65 = 91, * Government officer, female 370 * 0.105 = 38.85 = 39. The experiments were conducted at the Bisley Park on a Saturday. For instance, the population of ages of twenty boys in a class is an example of finite population.

This essay will try to present and examine the notable historic developments that have led to the modern sampler. In this essay comparison is made between stratified random sampling and convenience sampling. In such a case each unit has some defined pre-assigned probability of being chosen in the sample.

The current study design is based on mixed method including both quantitative (survey questionnaire) and qualitative (Focus group). People give less income data when asked for income tax but they overstate when asked for social status. If required then data can be collected again and again from the same respondents. Our academic experts are ready and waiting to assist with any writing project you may have. This type of sampling is more suitable comparatively in large samples and when population is homogeneous, that is, one composed of members who all possess the same attribute that the researcher are interested in measuring.

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