What is the mean of the numbers 1, 3, 5, 7, 9?

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Multiple Choice

What is the mean of the numbers 1, 3, 5, 7, 9?

Explanation:
To find the mean, add all the numbers together and divide by how many numbers there are. Here, there are five numbers: 1, 3, 5, 7, and 9. Their sum is 1 + 3 + 5 + 7 + 9 = 25. Divide by 5 to get 25 ÷ 5 = 5. So the mean is 5. These numbers are evenly spaced and centered around 5, so the average matches the middle value. This symmetry is a handy check: with evenly spaced data, the mean often sits at the central number.

To find the mean, add all the numbers together and divide by how many numbers there are. Here, there are five numbers: 1, 3, 5, 7, and 9. Their sum is 1 + 3 + 5 + 7 + 9 = 25. Divide by 5 to get 25 ÷ 5 = 5. So the mean is 5.

These numbers are evenly spaced and centered around 5, so the average matches the middle value. This symmetry is a handy check: with evenly spaced data, the mean often sits at the central number.

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