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What does double stem plot mean in math?
It is the result of drawing stem-and-leaf plots for two variables, back-to-back, such that they share the same stem.
What do you call two people that share the same birthday?
If they are related then they are twins?
How many people have the same birthday as you?
If there are 300,000,000 people in the US, then on average you share your birthday with over 82,000 people. Of course, if your birthday is 2/29, you would share it with about 1/4th of that number.
How many people are needed in a room before two of them share the same birthday?
For the chance to be at least 50% that two people share the same birthday, there needs to be 22 people. For the chance to be exactly 100% that two people share the same birthday, there needs to be 366 people. If there was 365 people, there would be a very small chance that each person in the room would have different birthdays. With 366 people, there are not enough individual days for every person to have a different birthday, so there has to be at least one pair.
What is an employee number used for?
To identify a person uniquely and avoid confusion when several people share the same or nearly the same name.
