If so the product will eventually be ignored by consumers

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The Trap of Average The average starting salary for a geography graduate from the University of North Carolina in 1985 was $100,000. The reason for this enormous salary was that the data included the salary that Michael Jordan, who graduated from the Department of Geography at the University of North Carolina, received when he joined the Chicago Bulls. When we use the word 'average', we usually think of the arithmetic mean. However, because the arithmetic mean can only be representative for data with a normal distribution and cannot account for outliers, the median has more stable representativeness in many cases. Survivor bias fallacy If incorrect data is used, the results will not be correct.


The famous saying in the field of data analysis, ‘Garbage In, Garbage Out’, has this meaning. A famous anecdote from Cambodia Phone Number Data World War II about strengthening fighter plane armor is a representative example of the survivor bias error. In order to increase the survival rate of fighters going into battle, we examined the hit areas of fighters returning from battle at the time and obtained results as shown in the picture above. If most of the bullet marks are concentrated in the fuselage and wings, where should we strengthen the armor? The correct answer is 'unknown'. This is because the above data only surveyed fighters who 'returned alive from battle', so data on fighters who did not return alive from battle is unknown. If the data we analyze is biased like this , the analysis results themselves become unreliable. The definition of the PMF (Product Market Fit) concept means 'having a product that can satisfy a good market'.




Rather than planning and marketing existing products first, we confirm this through hypothesis testing that solves the real problems of consumers in the market. Definition of PMF PMF (Product Market Fit), which means product market fit, was explained by Marc Andressen, founder of Netscape, as 'having a product in a good market that can satisfy that market.' Checking PMF means checking whether our product satisfies customer needs in the market and whether it has growth potential. Why check PMF? This is because the existing product launch formula, which is to first turn a product into a finished product based on logical and groundbreaking ideas and plans, and spend time and resources on marketing and updating the product to persuade customers, is difficult to solve real consumer problems. no see.  in the market. That's why we check PMF first to make sure that the products or services we create in the market are truly what customers want.