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

SAT Math· difficulty 3/5

A data set has 5 values with a mean of 12. If a 6th value of 30 is added, what is the new mean?

  • A

    18

  • B

    14

  • C

    15

    check_circle
  • D

    16

Explanation

Original sum = 5×12=605 \times 12 = 60. New sum = 60+30=9060 + 30 = 90. New mean = 90/6=1590/6 = 15.

Want 10 more like this — adaptive to your weak spots?

Related questions