Suppose the first row of 12 observations in exercise 110, Ask an Expert

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Suppose the first row of 12 observations in Exercise 110 came from solder connections made at station 105 and the second row came from station 107. Use a pair of stem-and-leaf diagrams to determine whether you should suspect a difference in the soldering process at the two stations.

Exercise 110

The following are the percentages of tin in measurements made on 24 solder joints:

(a) Construct a stem-and-leaf diagram using 5 and 6 as the stem labels.

(b) Construct a double-stem display.

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