A very educative article from Juned. Link to the original article – https://fakeprofessor.com/2018/03/31/hypothesis-testing-with-controlled-experiments-computing-p-value-using-z-statistic/
Google the word “experiment”, the answer returned is, “a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact”
While “Experiment” is a broader term, a controlled experiment specifically is about testing impact of a single factor /variable while the other variables remain constant.
Confused? Don’t worry, read ahead. I will attempt to explain this using a scenario.
Imagine Saidulu is an ice-cream manufacturer who wants to increase the sales of his product “Kya toh bhi Ice-cream”. His friend, Panthulu, suggests him to double the sugar content in ice-cream in order to achieve higher sales.
Will Saidulu go ahead and increase sugar in his ice-cream? That’s a bad business move. Fortunately Saidulu is smart, he conducts a controlled experiment. Voila!
How does he do that?
First, Saidulu tries to understand his customer segments. He narrows down attributes of his major consumer segment on the parameters…
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