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Question Five: A random sample of 20 observations on the welding time (in minutes) of an operation gives the following values: 1.9 1.8 2.2 2.0

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Question Five: A random sample of 20 observations on the welding time (in minutes) of an operation gives the following values: 1.9 1.8 2.2 2.0 2.5 2.1 1.8 2.6 2.0 1.9 2.1 2.0 1.7 1.8 2.6 2.2 2.3 2.2 1.7 2.4 (a) Find the five number summary: (b) Compute the IQR. (c) Draw a boxplot for the data and clearly explain what you see in the plot. 1

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