Monday
November 24, 2014

Homework Help: business

Posted by zana on Tuesday, July 8, 2008 at 12:42pm.

A garage wishes to analyse the costs of servicing its range of cars. The costs of servicing cars over the past month are shown.

250 200 375 394 415 405 340 365 417 400
336 245 280 442 422 460 300 405 417 435
193 275 355 225 318 375 390 149 390 468
390 345 95 355 525 575 400 413 312 570
350 411 148 395 380 175 125 198 370 433

Required

(a) How might this data have been collected and recorded?
(b) By choosing suitable class intervals, calculate the mean servicing cost.
(c) What other measures of dispersion could have been used to analyse the above data? Discuss the relative merits of each method.

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