Exam 5: Fundamentals of Statistics

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If the range or 400 observed values has a high of 360 kg and a low of 295 kg, the best cell interval is:

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When an accurate measure of the dispersion is desired use the:

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Ungrouped data collected on the time to perform a clerical operation are 3.0, 7.0, 3.0, and 6.0 minutes. Determine the average, median, mode, and sample standard deviation. It is NOT necessary to show your work. Use the function keys on your calculator. Answers Average \_\_\_\_\_ Range \_\_\_\_\_ Median \_\_\_\_\_ Mode \_\_\_\_\_ Sample Standard Deviation

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4.8, 4.0, 4.5, 3.0, 2.1

When a quick measure of the dispersion is desired, use the:

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The extreme or limit values of a cell are called:

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The peakedness of the data is called:

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Life tests on a part give a population mean value of 3000 hours and a population standard deviation of 200 hours. If the data are normally distributed, what percent of the parts are above 3300 hours.

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A variable is:

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The product of 3.10 x .015 is:

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A milk bottle has a lower specification of 4.0 liters and a standard deviation of 0.02 liters. The data are normally distributed. If 2.5% of the data is to be below the lower specification, where should the process center be located?

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Given the frequency distribution, sketch a relative cumulative frequency histogram.Label the axis. (Cell midpoint, Frequency) = (1.0, 3) (4.0, 5) and (7.0, 4)

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The type of frequency distribution which is most commonly found in quality work is:

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The distance between adjacent midpoints is called:

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The number of cells in a frequency distribution is between:

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