Practice Test GeeksAMC 8 - American Mathematics Competition 8 Practice Test
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Data Analysis & Statistics Flashcards

7 cards from real AMC 8 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Data Analysis & Statistics flashcards as text

  1. The test scores of 5 students are 72, 85, 90, 68, and 95. What is the mean score?

    Answer: 82

    The mean is (72+85+90+68+95)/5 = 410/5 = 82.

  2. The ages of seven children are 8, 11, 7, 9, 12, 10, and 9. What is the median age?

    Answer: 9

    Sorted in order: 7, 8, 9, 9, 10, 11, 12 — the middle (4th) value is 9.

  3. In a class, monthly books read: 5 students read 1 book, 8 read 2, 4 read 3, and 3 read 4. What is the mode?

    Answer: 2

    The mode is 2 because it appears most frequently — 8 students read 2 books.

  4. The high temperatures for a week were 72, 68, 75, 80, 65, 70, and 74 degrees. What is the range?

    Answer: 15

    Range = maximum − minimum = 80 − 65 = 15.

  5. A bar graph shows enrollment per grade: Grade 5 has 120, Grade 6 has 135, Grade 7 has 115, and Grade 8 has 130 students. What is the total enrollment?

    Answer: 500

    Total = 120 + 135 + 115 + 130 = 500 students.

  6. Hours studied per week by 6 students: 3, 5, 7, 4, 6, 5. What is the mean number of hours?

    Answer: 5

    Mean = (3+5+7+4+6+5)/6 = 30/6 = 5 hours.

  7. A survey of 30 students found: 12 chose red, 8 chose blue, 6 chose green, 4 chose yellow. What fraction chose blue?

    Answer: 4/15

    8 out of 30 students chose blue, and 8/30 simplifies to 4/15.