A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trough that is made out of 14-gauge steel coil. It is produced using a 250-ton progressive punch press with a wipe-down operation that puts two 90-degree forms in a flat steel to make the trough. The company requires that the width of the trough be between 8.31 inches and 8.43 inches. Data are collected from a sample of 49 troughs.
8.312 8.343 8.317 8.383 8.348 8.410 8.351 8.373 8.481 8.422 8.476 8.382 8.484 8.403
8.414 8.419 8.385 8.465 8.498 8.447 8.436 8.413 8.489 8.414 8.481 8.415 8.479 8.429
8.458 8.462 8.460 8.444 8.429 8.460 8.412 8.420 8.410 8.405 8.323 8.420 8.396 8.447
8.405 8.439 8.411 8.427 8.420 8.498 8.409
a) Construct a frequency distribution, percentage distribution, cumulative frequency, and a cumulative percentage distribution.
Class Interval |
Frequency |
Percentage |
Cumulative Frequency |
Cumulative Percentage |
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