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Math Statistics and Data Analysis Flashcards

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

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  1. A spinner has 8 equal sections numbered 1 through 8. What is the probability of landing on an even number?

    Answer: 1/2

    There are 4 even numbers (2,4,6,8) out of 8 total sections: P = 4/8 = 1/2.

  2. What is the median of 11, 14, 6, 9, 18, 3?

    Answer: 10

    Ordered: 3, 6, 9, 11, 14, 18 — median = (9 + 11) ÷ 2 = 10.

  3. In a class of 30 students, 18 play sports. What percent play sports?

    Answer: 60%

    Percent = (18 ÷ 30) × 100 = 0.6 × 100 = 60%.

  4. A box-and-whisker plot shows Q1 = 20, median = 30, Q3 = 45. What is the interquartile range (IQR)?

    Answer: 25

    IQR = Q3 − Q1 = 45 − 20 = 25.

  5. Two fair coins are flipped. What is the probability of getting exactly two heads?

    Answer: 1/4

    Outcomes: HH, HT, TH, TT — P(HH) = 1/4.

  6. Which measure of central tendency is most affected by an extreme outlier?

    Answer: Mean

    The mean is calculated using all values, so a very large or small outlier shifts it significantly.

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