The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school: Salary Number of Graduates
($1,000s)
18-under 21 -
21-under 25 -
24-under 27 -
29-under 30 -
Before data was collected, someone questioned the validity of this arrangement.Which of the following represents a problem with this set of intervals?
A)There are too many intervals.
B)The class widths are too small.
C)Some numbers between 18,000 and 30,000 would fall into two different intervals.
D)The first and the second interval overlap.
E)There are too few intervals.

Question

Quizplus · Accepted Answer

There is a gap between 27,000 and 29,000 where no interval is provided, which means that some numbers between 18,000 and 30,000 could potentially fall into two different intervals. This could result in inaccurate frequency counts and skewed data.

The Following Class Intervals for a Frequency Distribution Were Developed