Answer: 3
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Step-by-step explanation:
Add up the values
1 + 2 + 2 + 3 + 3 + 3 + 4 + 4 + 4 + 4 = 30
Then divide by the sample size n = 10 since there are 10 items in this list
30/10 = 3
The mean is 3.
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An example in real life
Imagine that the numbers given represent the number of cookies that 10 people have. Person A has 1 cookie, person B has 2 cookies, person C has 2 cookies, person D has 3 cookies, and so on.
Adding up all the cookies gets us 30 total. Imagine all the cookies are placed on a plate somewhere.
To split the cookies evenly among the 10 people, we divide by 10 to get 30/10 = 3. This means each person gets 3 cookies, which is exactly the arithmetic mean.