What can you guess about 20 people?

What if you had 20 friends and could see what they all did at once?

Imagine you have a big bowl full of different kinds of candy, some are red, some are blue, some are sour, some are sweet. If you pick out just 20 pieces randomly, you might guess that about half are red or blue, or maybe there’s more sour candies than sweet ones. That's like guessing what 20 people might be like.

If you know a little bit about all the candy in the bowl, you can make smart guesses about just 20 pieces, even if they're not all the same.

• Some candies are big, some are small.
• Some are your favorite, others aren’t.
• Maybe most of them are sweet, but one or two might be sour.

It’s like knowing that out of 20 people, maybe 10 have blue eyes and 10 have brown ones, or maybe there are more boys than girls. You can guess the general mix, even if you don’t know every detail about each person.

So when we guess about 20 people, we’re like candy detectives, looking at a small part of a bigger group to figure out what might be true for all of them.