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Problem Solving & Data Analysis Flashcards

7 cards from real SAT 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 data set has values 4, 8, 8, 10, 15. What is the median?

    Answer: 8

    With five ordered values, the middle (third) value is 8.

  2. The mean of five numbers is 12. If four of them are 10, 11, 13, and 14, what is the fifth?

    Answer: 12

    The total is 5 × 12 = 60, and 60 − (10+11+13+14) = 12.

  3. Which measure of center is most affected by an extreme outlier?

    Answer: Mean

    The mean uses every value, so a single extreme value shifts it significantly.

  4. A data set is 3, 5, 7, 9, 11. What is the range?

    Answer: 8

    Range = maximum − minimum = 11 − 3 = 8.

  5. The mode of the data set 2, 4, 4, 6, 6, 6, 8 is:

    Answer: 6

    The value 6 appears three times, more than any other value.

  6. If every value in a data set increases by 5, what happens to the mean?

    Answer: It increases by 5

    Adding a constant to every value raises the mean by that same constant.

  7. Two data sets have the same mean, but Set A is more spread out. Which has the larger standard deviation?

    Answer: Set A

    Standard deviation measures spread, so the more spread-out set has the larger value.