The Following Ten Scores Were Obtained on a 20-Point Quiz

Multiple Choice

The following ten scores were obtained on a 20-point quiz: 4,5,8,9,11,13,15,18,18,and 20.The teacher computed the usual descriptive measures of center (central tendency) and variability (dispersion) for these data,and then discovered an error was made.One of the 18s should have been a 16.Which of the following measures,calculated on the corrected data,would change from the original computation?

A) median
B) arithmetic mean
C) range
D) geometric mean