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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.

Read the first 6 Math Statistics and Data Analysis flashcards as text

  1. What is the mean of the data set: 4, 8, 6, 10, 12?

    Answer: 8

    Mean = (4 + 8 + 6 + 10 + 12) ÷ 5 = 40 ÷ 5 = 8.

  2. What is the median of the data set: 3, 7, 2, 9, 5?

    Answer: 5

    Ordered: 2, 3, 5, 7, 9 — the middle value is 5.

  3. A bag contains 3 red, 5 blue, and 2 green marbles. What is the probability of drawing a blue marble?

    Answer: 1/2

    P(blue) = 5 ÷ (3 + 5 + 2) = 5/10 = 1/2.

  4. What is the mode of the data set: 4, 7, 4, 9, 7, 4, 3?

    Answer: 4

    4 appears three times, more than any other value, so it is the mode.

  5. What is the range of the data set: 15, 3, 22, 8, 17?

    Answer: 19

    Range = maximum − minimum = 22 − 3 = 19.

  6. A student scored 72, 85, 90, and 63 on four tests. What is the mean score?

    Answer: 77.5

    Mean = (72 + 85 + 90 + 63) ÷ 4 = 310 ÷ 4 = 77.5.

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