Multiple choice

Find the mean of the given data. 11, 13, 15, 9, 11, 21, 11

  1. 13

  2. 15

  3. 17

  4. 19

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mean = sum of all values divided by count. Sum = 11+13+15+9+11+21+11 = 91. Count = 7. Mean = 91 ÷ 7 = 13. Option A is correct.