Exam Strategy

Readiness Check

You are ready when you can:

• Build T from percent transitions (4.14.A.1).
• Compute T v and n-step predictions (4.14.B.1).
• Explain and find steady state (4.14.B.2).
• Use inverse for past states when applicable (4.14.B.3).
• Construct models and support conclusions (1.C, 3.B, 3.C).

Course vs AP Exam

Course scope only (Unit 4 additional topic; not on the AP Exam). This completes Unit 4 additional matrix topics for coursework.

Tactics (course assessments)

1. Label states clearly (state 1 vs state 2). 2. Rows/columns of T match the story consistently. 3. Initial vector v matches state order. 4. One step: multiply T by v. 5. Many steps: T^n v or repeated multiply; check steady state with T s = s.

Common Traps

• Percent rows not summing correctly in context.
• Wrong state order in v.
• Claiming steady state without verification.

Quick Checklist

• [ ] Matrix built from context
• [ ] State vector aligned with states
• [ ] Predictions computed correctly
• [ ] Steady state checked if asked
• [ ] Conclusion supported with rationale