The airfocus **Focus score** is a computed priority value, considering the pros and cons of your prioritization framework.

The **Focus score** is the weighted sum over all X / Y criteria (the underlying criteria of your X / Y factors). Depending on the scoring direction (whether a factor is positive or negative), the values before the weighting are either **normalized** to 0 to 1 or vice versa to 1 to 0.

### Normalized values

For 0 - 10 value type criteria

0 -> 0.00

5 -> 0.50

10 -> 1.00

For S/M/L/XL value type criteria

S -> 0.00

M -> 0.33

L -> 0.66

XL -> 1.00

For money value type criteria

$0 -> 0.00

$Max -> 1.00

### Score calculation (example)

Value (Y – higher values are better) (60%)

Y1 (70%)

Y2 (30%)

Costs (X - lower values are better) (40%)

X1 (80%)

X2 (20%)

Score = (normCritY1 * 0.7 + normCritY2 * 0.3) * 0.6 + (1 - (normCritX1 * 0.8 + normCritX2 * 0.2) * 0.4

**Using a custom formula**

By default, airfocus uses the formula (Y + (1 - X)) / 2 * 100 to calculate its scores. In this way, it makes sure it takes the average value of X and Y values. In case you need the formula to adapt to your needs:

Click on "Use custom formula" inside the Priority Ratings app.

Here, you can modify all formulas (X value, Y value, and Scoring). Remember these X and Y formulas are calculated to use within the Priority chart graphing.

In your Scoring formula, you can add variables from X and Y to make your own.

**Pro tip ⭐️: **your formula's fields get normalized by default, so if you have a value of 5 (in a field of numbers 1-10), the value the formula will take for it will be 0.5. In case you want to take the "complete" value (5), you will have to add a "_abs" to your field in the formula (e.g. X1_abs).

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