When working with numerical data in Excel, you may need to round values to the nearest even or odd number. This can be done using the **ROUND** function. The **ROUND** function takes two arguments: the value to be rounded and the number of digits to which you want to round the value.

To round a value to the nearest even number, you would use the following formula:

```
=ROUND(value, 0)
```

To round a value to the nearest odd number, you would use the following formula:

```
=ROUND(value-0.5, 0)
```

For example, if you have a value of 7.5 in cell A1 and you want to round it to the nearest even number, you would use the following formula in cell A2:

```
=ROUND(A1, 0)
```

This would give you a result of 8 in cell A2.