Dalam teori probabilitas, hukum bilangan besar adalah hukum matematika yang menyatakan bahwa rata-rata hasil yang diperoleh dari sejumlah besar sampel acak independen konvergen ke nilai sebenarnya, jika ada.[1] Secara lebih formal, hukum bilangan besar menyatakan bahwa jika diberikan sampel berisi nilai-nilai yang independen dan terdistribusi secara identik, nilai rata-rata sampel akan konvergen ke nilai rata-rata sebenarnya.
Apple CEO Tim Cook said something that would make statisticians cringe. "We don't believe in such laws as laws of large numbers. This is sort of, uh, old dogma, I think, that was cooked up by somebody [..]" said Tim Cook and while: "However, the law of large numbers has nothing to do with large companies, large revenues, or large growth rates. The law of large numbers is a fundamental concept in probability theory and statistics, tying together theoretical probabilities that we can calculate to the actual outcomes of experiments that we empirically perform. explained Business Insider