# How to Estimate the Mean

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Calculating a mean estimate is simply finding the average number or amount in a series. A mean is often referred to as an estimate because it represents the average of a series of number or amounts and does not always come out as a whole number. There are many instances where estimating the mean is an important skill in life. In Baseball, it's used to calculate a player's batting average. In the business world, calculating the mean is used to figure out the average monthly sales income over the course of a year.

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## A Very Simple Formula

• Add your numbers. For example, 13 + 14 + 18 + 22 + 36 + 42 + 99 + 2 = 246.

• Count the numbers used in the range. In this case it's 8 numbers.

• Divide the sum by the number of numbers given. Using this example, 246 divided by 8 equals 30.75, which is the mean estimate.

## Tips & Warnings

• Using a calculator makes adding the numbers easier and reduces the chance of errors.
• Adding a long series of numbers can seem very tedious so you should always double check your math to make sure you have the correct result.

## References

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