Civil Service Exam Reviewer · Data Interpretation · hard

Complaints Received by a Government Office

Study the Pareto chart below. The bars show the number of complaints of each type received by a government office in one year, from most to least common; the line shows the cumulative percent of all complaints. Use it to answer the questions that follow.

What is the SMALLEST number of complaint types that together account for at least 80% of all complaints?

  1. 2
  2. 3
  3. 4
  4. 1

Answer

B. 3

Solution

Cumulative: 44.4%, 68.5%, 85.2% — the first three types already pass 80%.

More Data Interpretation questions

  1. What cumulative percent of complaints do the top TWO types account for?
  2. What percent of all complaints were about long waiting time?
  3. What was the MOST common type of complaint?
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  5. What share of the 2025 total came from renewables?
  6. In which year did renewables FIRST generate MORE electricity than natural gas?
  7. What was the TOTAL electricity generated in 2025?
  8. Which source's generation INCREASED every year?
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