Wednesday, April 18, 2007. Multi-phase sampling is useful when the frame lacks auxiliary information that could be used to stratify the population or to screen out part of the population. Sample has been drawn, a second, smaller sample can be extracted from among t.

Wednesday, April 18, 2007. , once an hour, every other lot, etc. Suppose you want to sample 8 houses from a street of 120 houses. Sample over extended periods of time. Spreads the sample more evenly over the population.

Difference between Simple Random Sampling and Conv. Wednesday, April 18, 2007. Snowball SamplingSnowball sampling is an approach for locating information rich key informats. In this approach few potential respondents are contacted and asked whether they know anybody with the characteristics that you are looking for in your research. Snowball sampling allows you to identify the resources within a community and to select those people best.

The grass is greener on my side. Tuesday, April 17, 2007. Cluster Sampling - Group work. Cluster sampling is a sampling technique where the entire population is divided into groups, or clusters and a random sample of these clusters are selected. All observations in the selected clusters are included in the sample. 2 If we take a random sample of each selected cluster, the method is called a two-stage cluster sampling. 3 For example, in surveying the.

Sunday, April 29, 2007. Thursday, April 19, 2007. The population is divided into strata and a random sample is taken from each stratum. Stratification means division of the universe into groups according to geographical, sociological, or economic characteristics. When the population is heterogeneous wi.

This blog share my imagination and work! Thursday, April 19, 2007. What is Purposive Sampling? Explained purposive sampling as another type of non-probability. Sampling, which is characterized by the use of judgment and a deliberate effort to obtain representative samples by including typical areas or groups in the sample. A purposive sample is one in which a surveyor tries to create a representative sample without sampling at random. Of a test or instrument with a known .

Thursday, April 19, 2007. Quota sampling is a data collection method designed to select sample units in a block of a predetermined size. It is not based on random selection. This would be a .

Thursday, April 19, 2007. A data collection method designed to select sample units in a block of a predetermined size. It is not based on random selection. When using this strategy, researc.

Monday, June 11, 2007. If I manage to write feedback to each and every one of you I will, but till then this feedback should clear misconceptions. Even though Cluster sampling is a type of .