One-Variable Data: Distributions and Measures of Center and Spread

SAT Math· difficulty 3/5

The mean of 5 numbers is 14. Four of the numbers are 10, 13, 15, 18. What is the fifth number?

  • A

    14

    check_circle
  • B

    16

  • C

    12

  • D

    18

Explanation

Sum = 5×14=705 \times 14 = 70. Sum of given four = 10+13+15+18=5610 + 13 + 15 + 18 = 56. Fifth = 7056=1470 - 56 = 14.

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