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Exam IIBA-CBDA topic 1 question 69 discussion

Actual exam question from IIBA's IIBA-CBDA
Question #: 69
Topic #: 1
[All IIBA-CBDA Questions]

There were 7 students enrolled in the Introduction to Artificial Intelligence course. These were the student’s scores from the final exam: 64, 70, 80, 80, 90, 98, 100.
What is the mean and mode for the outlined scores?

  • A. 79.84, 81.40
  • B. 80, 83.14
  • C. 80, 80
  • D. 83.14, 80
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Suggested Answer: D 🗳️

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Rabbitsfoot
5 months, 2 weeks ago
Selected Answer: D
1. Mean: The mean (average) is calculated by summing all the scores and then dividing by the number of scores. Scores: 64, 70, 80, 80, 90, 98, 100 Sum of scores = 64 + 70 + 80 + 80 + 90 + 98 + 100 = 582 Number of scores = 7 Mean = Sum of scores / Number of scores = 582 / 7 = 83.14 (approx) 2. Mode: The mode is the score that appears most frequently. In the list of scores: 64, 70, 80, 80, 90, 98, 100, the score 80 appears twice, while all other scores appear only once. So, the mode is 80. D. Mean = 83.14, Mode = 80
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