I found decision tree somewhat complex. A tabular format of the same would be more suitable to scan and select the right choice quickly.
| I | II | I&II | |
|---|---|---|---|
| A | / | X | |
| B | X | / | |
| C | X | X | / |
| D | / | / | |
| E | X | X | X |
For each question, mark the result for I, II and if needed I&II to arrive at the answer. It easy to compare the results of analysis against the table and mark the answer.
Q1. / X ----> leads to answer A
Q2. X X / --> leads to answer C
Q3. X / ----> leads to answer B
The other situation is when you need make an educated guess.
Q4. ? / --> leads to answer B or D (guess)
Q5. / ? --> leads to answer A or D (guess)
My mind and eyes are used to the way data filter works in MS Excel. So, I am thinking to use this system instead of decision tree as given in material.
