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Random sampling: systematic sampling
Now that we have taken a look at stratified sampling, we’d like to continue our series of posts on sampling techniques by examining systematic sampling. Systematic sampling used to be very popular, ...
January 23, 2017 | Carlos Ochoa
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Random sampling: stratified sampling
In an earlier post, we saw the definition, advantages and drawback of simple random sampling. Today, we’re going to take a look at stratified sampling. This method, which is a form of random ...
January 18, 2017 | Carlos Ochoa
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Random sampling: simple random sampling
Continuing with our series of posts on sampling, today we'll review the first random sampling method: simple random sampling. This is one of the most popular sampling methods, and it serves as a ...
January 16, 2017 | Carlos Ochoa
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Random and non-random sampling
In a recent post, we learned about sampling and the advantages it offers when we want to study a population. Today, we're going to take a look at the two main sampling methods. Let’s start by ...
January 12, 2017 | Carlos Ochoa
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Sampling: what it is and why it works
Whenever I look at the stats for this modest blog, I always notice the same pattern. The number of visits aligns perfectly with the Pareto principle: 20% of our posts generate 80% of our page views. ...
December 27, 2016 | Carlos Ochoa
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ISO/TC 225 announces latest updates on research standards
Over three days in October, working groups of the ISO Technical Committee 225 (TC 225), which has responsibility for the market, opinion and social research ISO standards, gathered in Madrid at AENOR ...
October 24, 2016 | Nijady Balanta
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