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Data Interpretation and Probability Flashcards

7 cards from real BMST 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 Interpretation and Probability flashcards as text

  1. A scatter plot shows a strong positive correlation between study hours and test scores. What does this mean?

    Answer: As study hours increase, scores tend to increase

    A positive correlation means both variables increase together.

  2. A deck of 52 cards. What is the probability of drawing a face card (Jack, Queen, King)?

    Answer: 3/13

    There are 12 face cards (3 per suit × 4 suits), so P = 12/52 = 3/13.

  3. Data set: 5, 8, 8, 12, 15, 8, 20. What is the mode?

    Answer: 8

    The mode is 8 because it appears three times, more than any other value.

  4. A histogram shows class intervals 0–10, 10–20, 20–30, 30–40 with frequencies 5, 12, 8, 3. What percentage of data falls in the 10–20 interval?

    Answer: 42.86%

    Total = 28; 12/28 = 0.4286 ≈ 42.86%.

  5. A box plot shows Q1=30, median=45, Q3=60. What is the interquartile range (IQR)?

    Answer: 30

    IQR = Q3 − Q1 = 60 − 30 = 30.

  6. If you flip a fair coin 3 times, what is the probability of getting exactly 2 heads?

    Answer: 3/8

    Combinations: HHT, HTH, THH = 3 outcomes out of 8 total, so P = 3/8.

  7. A table shows defective items per day: Mon=4, Tue=7, Wed=3, Thu=6, Fri=5. What is the mean number of defects per day?

    Answer: 5

    Mean = (4+7+3+6+5)/5 = 25/5 = 5.