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Random sampling: cluster sampling
With this post dedicated to cluster sampling, we conclude our first block of posts on random sampling. With our next post, we will launch into nonrandom sampling methods, which are used most commonly ...
January 25, 2017 | Carlos Ochoa
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
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
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
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
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