Multiple choice

If 15 is included in the series 7, 8, 13, 13, 9, 14, 15, 15, 15, 19, which will be affected the most?

  1. Mean

  2. Median

  3. Mode

  4. Both mean and mode

  5. Both mean and median
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Original series: 7, 8, 13, 13, 9, 14, 15, 15, 15, 19. Sorted: 7, 8, 9, 13, 13, 14, 15, 15, 15, 19. Median is (13+14)/2 = 13.5. Adding 15: 7, 8, 9, 13, 13, 14, 15, 15, 15, 15, 19. Median is 14. The median changed from 13.5 to 14. The mode was 15 and remains 15. The mean changes slightly. The median is affected significantly.

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