The Following Class Intervals for a Frequency Distribution Were Developed

The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school: $\begin{array}{c}\begin{array}{lll}\text {Salary}\\\\\\\\\\\\\end{array}\begin{array}{lll}\text {Number of Graduates}\\\text { (\$1,000s) } \\\text { 28-under } 31 \\\text { 31-under } 34 \\\text { 34-under } 35 \\\text { 35-under } 38 \end{array}\begin{array}{lll}\\\\-\\-\\-\\-\\\end{array}\end{array}$


Before data were collected, someone questioned the validity of this arrangement.Which of the following represents a problem with this set of intervals?

A) The intervals are too wide.
B) More classes are needed as the numbers are in the thousands.
C) The first interval should start at 0.
D) The second and the third interval overlap.
E) The third interval is smaller than the others.

Correct Answer:

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