Here's how to calculate the mean (also known as the average):

1. Sum the Values: Add up all the numbers in your dataset.

2. Divide by the Number of Values: Take the sum you calculated in step 1 and divide it by the total number of values in your dataset.

Formula:

Mean = (Sum of all values) / (Number of values)

Example:

Let's say you have the following numbers: 5, 10, 15, 20, 25

1. Sum: 5 + 10 + 15 + 20 + 25 = 75

2. Divide: 75 / 5 = 15

Therefore, the mean (average) of the dataset is 15.

Types of Means:

* Arithmetic Mean: The most common type of mean, calculated as described above.

* Geometric Mean: Used for data that grows exponentially, like compound interest.

* Harmonic Mean: Used when averaging rates or ratios.

Let me know if you have a specific dataset or want to learn more about different types of means!