<aside> 💡 Sampling is a method that allows us to get information about the population based on the statistics from a subset of the population (sample), without having to investigate every individual.
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The above diagram perfectly illustrates what sampling is. Let’s understand this at a more intuitive level through an example.
We want to find the average height of all adult males in Delhi. The population of Delhi is around 3 crore and males would be roughly around 1.5 crores (these are general assumptions for this example so don’t take them at face value!). As you can imagine, it is nearly impossible to find the average height of all males in Delhi.
It’s also not possible to reach every male so we can’t really analyze the entire population. So what can we do instead? We can take multiple samples and calculate the average height of individuals in the selected samples.
Two categories of sampling:
