## NFL passer rating computer

It's
- Enter the
raw information into the top half of the table
- To
calculate the final score, and the other percentages, press "compute".

What is the
formula?

- Calculate
the four factors.
- Factor
A: subtract 30 from percentage of pass attempts,
divide result by 20.
- Factor
B: divide percentage of TD's by 5
- Factor
C: subtract interception percentage from 9.5,
divide result by 4.
- Factor
D: subtract 3 from average yards per attempt,
divide result by 4.

- If any
factor is greater than 2.375, lower it to 2.375. If any
factor is lower than zero, raise it to zero.
- Add the
four factors together. Since no factor may exceed 2.375,
their sum may not exceed 9.5.
- Multiply
the result times 100, divide by 6. The highest possible
is 158.3. Tying the all-time record in each category
would result in exactly 147.

Html and
javascript code written by Greg Wroblewski, and placed into the
public domain.