OK, I am assuming that you are using the Starter book, and NOT Test 1. I dont have the Starter book, but I can tell you that it's important for you to note on the book score sheet next to each drill # row, the total score for that drill. And that max score is noted at the top of each drill description page. Knowing that max score helps to understand what your actual score you generate is in comparison.
For the purposes of understanding how to calculate I am going to take your numbers and use them as if you were doing drill # 1 in test # 1 since that's what I have.
You complete 3 attempts on drill # 1. The max score for the drill is 120. Your total attempts are 3, 4, & 4 for a total of 11. In this example the target average is 3.33. The maximum average is 4. You need to divide your total inning score of (11) by (3) which generates an average of 3.66. In this case drill #1 of Test # 1 has a factor of 30. Take your generated average of 3.66 and multiply that by the factor of 30 to generate a drill score of 109.99 or actually 110. So out of a max score of 120 you get 110. That winds up being 91.66% of the max score for the first drill.
That constitutes a very high performance level for that drill and if you consistently achieve that then you can consider dropping that drill for regular practice and instead work on the drills that you achieve under 80% or even under 90%. On the other hand if you are looking to achieve levels of say 95% or better on all the drills then you can choose to keep working on the given drill.
I train under the IPAT tests 1, 2 & 3 personally. I practice the IPAT test 1 completely at the end of the week. Before then I choose to work on 2 of the drills each day that I am at a table. And I schedule 25 attempts on each drill during that training session. And I keep records of my score on each of those attempts. At the end of the month, I will generate 4 complete PAT 1 tests. Afterwards, I schedule 2 more additional days to self test myself under PAT 2 & PAT 3 just to see how my training efforts are helping on the more difficult test levels.
My high score in self testing is 1,123 for PAT 1. That's the equivalent of being ranked around # 86 in the world. That is not official however, since I have not taken the test officially. And I wont until I begin to average a score of 1,400+ on my self test. Then I will schedule an official test. I'm either going to score #1 in the world or at the very least make it in the top 10 on PAT 1.
Afterwards I will then work on PAT 2 full time and begin the process all over again.
I hope this gives you an easier understanding of how to calculate your IPAT scores. When you move into PAT 1 let me know and I can help you a bit more with some forms that I created that are more informative and easier to understand than what are in the PAT books.