# What is the law of percentage?

To determine the percentage, we need to divide the value by the total value and then multiply the result by 100. The law of large numbers, in probability and statistics, states that as the sample size grows, its mean approaches the average of the entire population. In the 16th century, mathematician Gerolama Cardano recognized the Law of Large Numbers, but he never demonstrated it. In 1713, the Swiss mathematician Jakob Bernoulli proved this theorem in his book Ars Conjectandi.

It was later refined by other prominent mathematicians, such as Pafnuty Chebyshev, founder of St. In business, the term large numbers law is sometimes used in relation to growth rates, expressed as a percentage. It suggests that, as a company expands, the percentage rate of growth becomes increasingly difficult to maintain. The law of large numbers shows us that if you do an unpredictable experiment and repeat it enough times, what you will end up is an average.

Both laws tell us that, given a sufficiently large number of data points, those data points will lead to predictable behavior. The Central Limit Theorem shows that, as the size of a sample tends to infinity, the shape of the sample distribution will approximate the normal distribution; the Law of Large Numbers shows where the center of that normal curve is likely to be found. The strong law implies the weak law, but it considers an infinite sequence of results. Therefore, weak law is usually better for practical applications.

This indicates that, with a probability of 1, the limit of the sequence p will be equal to p. The law of averages sometimes sneaks into textbooks instead of the Law of Large Numbers. The two terms are not, technically, interchangeable. If you're still not convinced, try this Wolfram dice roll calculator.

You can set the number of spins to a small amount (for example, up to 50) and you'll see some pretty random results. Increase the number of rolls to a few thousand and you'll see the results begin to converge to an average. A second example of the player fallacy: you play online with one of your friends and for the past year you have won 50% of your games. Your friend has a winning streak of 4 straight games.

You mistakenly think that the next 4 games will probably be victories for you, since you “must win”. The reversal of the player fallacy is also a fallacy, in which (because the player thinks he is on a “lucky streak) he is more likely to get the same result (in the first example above, more queues). The player fallacy is also known as the Monte Carlo fallacy or the maturity of opportunities fallacy. Or how about holding a lightning rod in a storm.

The chances of being struck by lightning are very high. If you get hit once (and you survive), are you going to keep holding the lightning rod? Probably not %26hellip”.