Civil Service Exam Reviewer · Data Interpretation · medium
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.
What is the average exam score of the eight reviewees?
- 80
- 79
- 78.88
- 79.88
Answer
D. 79.88
Solution
Sum = 68 + 72 + 75 + 80 + 79 + 85 + 88 + 92 = 639. Average = 639 ÷ 8 = 79.88.
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