The time that it takes for a person to complete a minor task was measured with and without a distraction (television show or movie). The difference in time, given in seconds, is shown below.  Difference in Time to Complete Task 3.4     32.8     28.1     31.8     62.0     65.8     92.4     48.3     51.4     28.9     68.2     75.1     78.0     83.1     56.0     72.6     87.0     92.1     61.1     53.0    What type of graph would be the most useful to show the spread of the data collected?

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