How do you calculate the mean of a dataset?

To calculate the mean of a dataset, follow these steps:

1. Add up all the numbers in the dataset. This will give you the total sum.

2. Count the number of items in the dataset. This will give you the total count.

3. Divide the total sum by the total count. This will give you the mean (or average) of the dataset.

For example, if your dataset is {4, 8, 6, 5, 3, 2, 8, 9, 2}, the mean would be calculated as follows:

1. Total sum = 4 + 8 + 6 + 5 + 3 + 2 + 8 + 9 + 2 = 47
2. Total count = 9 (since there are 9 numbers in the dataset)
3. Mean = Total sum / Total count = 47 / 9 = 5.22 (rounded to two decimal places)