An article in Technometrics (Vol. 19, 1977, p. 425) presented the following data on the

Chapter 6, Problem 6-22

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QUESTION:

An article in Technometrics (Vol. 19, 1977, p. 425) presented the following data on the motor fuel octane ratings of several blends of gasoline:88.5 94.7 84.3 90.1 89.0 89.8 91.6 90.3 90.0 91.5 89.9 98.8 88.3 90.4 91.2 90.6 92.2 87.7 91.1 86.7 93.4 96.1 89.6 90.4 91.6 90.7 88.6 88.3 94.2 85.3 90.1 89.3 91.1 92.2 83.4 91.0 88.2 88.5 93.3 87.4 91.1 90.5 100.3 87.6 92.7 87.9 93.0 94.4 90.4 91.2 86.7 94.2 90.8 90.1 91.8 88.4 92.6 93.7 96.5 84.3 93.2 88.6 88.7 92.7 89.3 91.0 87.5 87.8 88.3 89.2 92.3 88.9 89.8 92.7 93.3 86.7 91.0Construct a stem-and-leaf display for these data. Calculate the median and quartiles of these data.

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QUESTION:

An article in Technometrics (Vol. 19, 1977, p. 425) presented the following data on the motor fuel octane ratings of several blends of gasoline:88.5 94.7 84.3 90.1 89.0 89.8 91.6 90.3 90.0 91.5 89.9 98.8 88.3 90.4 91.2 90.6 92.2 87.7 91.1 86.7 93.4 96.1 89.6 90.4 91.6 90.7 88.6 88.3 94.2 85.3 90.1 89.3 91.1 92.2 83.4 91.0 88.2 88.5 93.3 87.4 91.1 90.5 100.3 87.6 92.7 87.9 93.0 94.4 90.4 91.2 86.7 94.2 90.8 90.1 91.8 88.4 92.6 93.7 96.5 84.3 93.2 88.6 88.7 92.7 89.3 91.0 87.5 87.8 88.3 89.2 92.3 88.9 89.8 92.7 93.3 86.7 91.0Construct a stem-and-leaf display for these data. Calculate the median and quartiles of these data.

ANSWER:


Stem-and-Leaf Display

Stem | Leaf
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