In their book Introduction to Linear Regression Analysis (3rd edition, Wiley, 2001) Montgomery Peck and Vining present measurements on NbOCl3 concentration from a tube-flow reactor experiment the data, in grammole per liter x 10-3, are as follows:

(a) Construct a stem-and-leaf diagram for this data and comment on any important features that you notice.
(b) Compute the sample mean, sample standard deviation, and the sample median.

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