Civil Service Exam Reviewer · Data Interpretation · hard

Weekly Study Hours and Exam Scores of Eight Reviewees

Study the scatter plot below. Each point shows one reviewee's weekly study hours and exam score, labeled as (hours, score). Use it to answer the questions that follow.

From Ana to Hazel, what is the average increase in score for each additional hour of study?

  1. 2.4 points per hour
  2. 24 points per hour
  3. 3 points per hour
  4. 3.5 points per hour

Answer

C. 3 points per hour

Solution

Increase in score = 92 − 68 = 24; increase in hours = 10 − 2 = 8. 24 ÷ 8 = 3 points per hour.

More Data Interpretation questions

  1. What is the average exam score of the eight reviewees?
  2. Which reviewee studied MORE hours than the reviewee before him or her but got a LOWER score?
  3. Which reviewee got the HIGHEST exam score?
  4. By how much did total tourist spending in Q4 exceed that in Q1?
  5. What was the total tourist spending in Q4?
  6. What was the percent DECREASE in tourist arrivals from Q1 to Q3?
  7. What was the total number of tourist arrivals for the year?
  8. In which quarter were tourist arrivals the LOWEST?
  9. The target is 50,000 vaccinated persons. If vaccinations continue at the same number as in Week 6, how many MORE weeks are needed to reach…
  10. What was the average number of persons vaccinated per week over the six weeks (to the nearest whole number)?

All Data Interpretation questions