Question

An article in Technometrics (Vol. 19, 1977, p. 425) presents the following data on the motor fuel octane ratings of several blends of gasoline. Construct a frequency distribution and histogram for these data. Use 8 bins.90.9 98.6 89.6 92.6 91.8 92.0 92.3 90.994.3 88.3 91.6 82.5 89.0 89.8 85.6 90.283.1 89.4 92.1 88.9 92.0 91.3 87.0 88.989.9 92.1 90.4 86.7 96.8 93.8 88.1 92.591.9 88.8 89.3 89.7 91.3 97.0 89.1 90.590.1 89.6 87.6 94.9 92.8 84.1 91.9 92.692.4 87.7 95.7 88.5 90.5 90.1 89.6 91.1 91.2 85.6 91.7 88.9 88.6 89.0 89.0 88.2 91.1 90.6 93.5 89.1 90.8 91.4 95.3 88.6 99.3 91.9 91.5 94.2 91.4 95.0 91.0 88.9 90.1 89.7 85.6

Answer 1

Answer:

I will be attaching files to explain the procedure

Step-by-step explanation:

From the word document, we can see the data was first arranged, and then a frequency distribution table was created, and cummulative frequency calculated.

The class interval used was 2.5 and the cummulative frequency was 83 ( this is the total amount of observations in the data).

The histogram was improvised and I will attach a picture of it.

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