Here is a table of the undergraduate enrollment at a large state university, broken down by class:

The percentage of students in the five classifications should add to 100%. In fact, they add to only 99.9%. The reason is that
A) there must be an arithmetic mistake.
B) the percents are not exact, because they are rounded to one decimal place.
C) some students must be left out, so the total should be less than 100%.
D) this is an example of a biased measurement.

Question

Here is a table of the undergraduate enrollment at a large state university, broken down by class:

The percentage of students in the five classifications should add to 100%. In fact, they add to only 99.9%. The reason is that
A) there must be an arithmetic mistake. 
B) the percents are not exact, because they are rounded to one decimal place. 
C) some students must be left out, so the total should be less than 100%. 
D) this is an example of a biased measurement.

Quizplus · Accepted Answer

The most likely reason for the total percentage to add up to 99.9% is that the percentages were rounded to one decimal place, which can cause a slight underestimation. This is a common issue with reporting percentages and does not necessarily indicate an arithmetic mistake or biased measurement.

Here Is a Table of the Undergraduate Enrollment at a Large