statistics

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Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes.

261


269


236


244


280


296


284


297


290


290


247


256

338


360


341


333


261


267


287


296


313


311


309


309

299


303


277


283


304


305


286


290


286


287


297


299

332


330


309


326


309


326


285


291


295


298


306


315

310


318


318


320


333


321


323


324


327


239


358




The frequency table for the above data is given below.

Class Limits


Boundaries


Midpoint


Freq.


Relative Freq.


Cumulative Freq.

236 260


235.5 260.5


248


5


0.08


5

261 285


260.5 285.5


273


9


0.15


14

286 310


285.5 310.5


298


25


0.42


39

311 335


310.5 335.5


323


16


0.27


55

336 360


335.5 360.5


348


4


0.07


59

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