Are birthdays distributed evenly?
Are birthdays distributed evenly?
With 23 people there is a 50.7\% probability that some of them will share the same birthday. 57 people are needed for a 99\% probability. But these figures assume a random distribution of birthdays throughout the population.
What are the odds of having the same birthday?
The birthday paradox, also known as the birthday problem, states that in a random group of 23 people, there is about a 50 percent chance that two people have the same birthday.
What is the most common birth month?
The Centers for Disease Control and Prevention provides birth rate by month data, showing July through October tends to be the most popular birth months in the United States. August is the overall most popular month for birthdays, which makes sense, considering a late August birthday means December conception.
Are birthdays random?
Birthdays are not randomly distributed. As a matter of fact, there is a slight bias to the latter half of the year. But, this isn’t just in the US, it’s in all societies.
How do you solve the birthday paradox?
They’ve got 364 days to choose from. So the chance that two people don’t share a birthday is (365×364)/365². Subtract that from 1 and you get what you expect: that there’s a 1 in 365 chance that two people share a birthday.
How old would you be if born in 1998?
How old am i, If i was born in January, 1998?
| 01 January 1998, Thursday | 23 Years, 11 Months, 15 Days or 287 months, or 1250 weeks, or 8750 days, or 12600000 minutes, or 756000000 seconds |
|---|---|
| 16 January 1998, Friday | 23 Years, 11 Months, 0 Days or 287 months, or 1247 weeks, or 8735 days, or 12578400 minutes, or 754704000 seconds |
Is birthday paradox true?
In a room of just 23 people there’s a 50-50 chance of at least two people having the same birthday. The birthday paradox is strange, counter-intuitive, and completely true. It’s only a “paradox” because our brains can’t handle the compounding power of exponents.