You can use the SUM function along with logical operators (AND, OR) in Excel to create conditional sums. This allows you to sum only specific values within a range that meet certain criteria.

Here's how it works:

1. AND Operator:

The AND operator returns TRUE only if all specified conditions are met. You can use it within the SUM function to sum values that meet multiple criteria.

Example:

Let's say you have a table with data on product sales (Product, Price, Region). You want to calculate the total sales for "Product A" AND in the "North" region.

Formula:

```excel
=SUM(IF(AND(A2:A10="Product A",B2:B10="North"),C2:C10,0))
```

Explanation:

* `A2:A10` - Range containing product names.
* `B2:B10` - Range containing regions.
* `C2:C10` - Range containing sales figures.
* `AND(A2:A10="Product A",B2:B10="North")` - This part checks if the corresponding items in both ranges meet the criteria ("Product A" and "North").
* `IF(...)` - This function checks if the AND condition is TRUE. If yes, it includes the corresponding value from the sales range (C2:C10) in the sum. Otherwise, it includes 0.
* `SUM(...)` - This function sums all the values returned by the IF statement, effectively summing only sales for "Product A" in the "North" region.

2. OR Operator:

The OR operator returns TRUE if at least one of the specified conditions is met. You can use it with SUM to calculate the total sales for "Product A" OR in the "North" region.

Formula:

```excel
=SUM(IF(OR(A2:A10="Product A",B2:B10="North"),C2:C10,0))
```

Explanation:

This formula works similarly to the AND example, but the OR operator checks if either the product is "Product A" or the region is "North". If any condition is met, the corresponding sales value is included in the sum.

Remember:

* You can use parentheses to group multiple conditions within the AND or OR operator for complex criteria.
* Make sure your data is arranged correctly for the chosen ranges (product names, regions, sales figures) to ensure accurate results.

By using SUM with logical operators, you can create powerful and flexible formulas to analyze your data based on specific conditions.