EA Study Guide 2026
Everything you need to pass the EA exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 EA Exam Format at a Glance
📚 EA Topics to Study (23)
✍️ Sample EA Questions & Answers
1. A city claims that adding bike lanes reduced car traffic by 15%. A critic argues this is misleading. Which data point would best support the critic's position?
An alternative explanation (the bypass) undermines the city's causal claim that bike lanes drove the traffic reduction.
2. A bar chart shows quarterly sales: Q1=$200K, Q2=$250K, Q3=$220K, Q4=$300K. Which quarter showed the greatest percentage increase over the previous quarter?
Q2 increase = ($250K−$200K)/$200K = 25%; Q4 = ($300K−$220K)/$220K ≈ 36.4% — so Q4 is actually greatest.
3. A blend of two coffees: Type A costs $8/lb and Type B costs $5/lb. A 10 lb blend costs $6.50/lb total. How many pounds of each type are in the blend?
8a + 5b = 65 and a + b = 10; solving: a = 5, b = 5.
4. Email 1: a client requires delivery within 10 business days. Email 2: production takes 6 days. Email 3: shipping takes 3 days. Email 4: there is a 1-day quality check. Can the timeline be met?
Total time = 6 + 3 + 1 = 10 days, which exactly meets the 10-day requirement.
5. A two-line chart shows projected vs. actual costs over 6 months. The actual line is consistently below the projected line. What does this indicate?
Actual costs consistently below projections mean spending is better controlled than the budget assumed.
6. What is the average of five numbers? (1) The sum of the five numbers is 75. (2) Four of the five numbers are 12, 14, 16, and 18.
Statement (1): avg = 75/5 = 15; sufficient. Statement (2): 4 known numbers sum to 60; with the 5th unknown, average cannot be found — actually insufficient alone.