A survey of 50 randomly selected full-time Joliet Junior College students was conducted during the Fall 2015 semester. In the survey, the students were asked to disclose their weekly income from employment. If the student did not work, $0 was entered.

(a) Check the data set for outliers.
(b) Draw a histogram of the data and label the outliers on the histogram.
(c) Provide an explanation for the outliers.

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