## SUM Function

The SUM function is a premade function in Google Sheets, which adds up numbers in a range.

It is typed `=SUM`and gets a list of cells:

=STDEV.S(value1, [value2, ...])

Note: The `=SUM` function adds up both negative and positive cell values.

Let's see some examples!

## Sum Function Example

Calculate the sum of all the Total stats for this list of Pokemon: Copy Values

The SUMSUM function, step by step:

1. Select the cell `B12`
2. Type `=SUM`
3. Click the SUM command 1. Specify the range `B2:B10` for the Total stats
2. Hit enter Now, the function calculates the sum of Total stats for the Pokemon in the list: Great job! You have successfully calculated the sum of the stats using the `=SUM` function. The Pokemon's stats have a total sum of `3092`.

Let's change one of the values in the range, to see what happens. Type `350` into cell `B7`: Rattata total stats was changed from `253` to `350`.

The SUM function updated the total sum from `3092` to `3189`.

It updates the SUM when values inside of the range are changed.

Lets change Rattata's stats to a negative number to see what happens. Type `-350` into cell `B7`: The SUM is updated to `2489`. Adding a negative number subtracts that value from the range.