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Question: twentyseven 4 steel reinforcing bars were randomly chosen from a...

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Twenty-seven #4 steel reinforcing bars were randomly chosen from a manufacturers assembly line. The twenty-seven bars were pulled until they failed. The tensile force required (Ib) to break the bars was: 8560 8700 8420 8580 8460 8440 8460 8440 8550 8430 8620 8580 8650 8460 8500 8420 8500 8620 8440 8420 8420 8410 8700 8360 8310 8330 8510 Determine the mean, median, standard deviation, variance, coefficient of variation, and standard error of these data. Determine the z-scores of the first three data values (8560, 8700, 8420).

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