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2-48. The annual Wolfer sunspot numbers from 1770 to
1869 are shown in Table 2-7. (For an interesting analysis and
interpretation of these numbers, see the book by Box and
Jenkins referenced in Exercise 247. The analysis requires some
advanced knowledge of statistics and statistical model building.)
(a) Construct a time series plot of these data.
(b) Construct and interpret either a digidot plot (or a marginal
plot) or a stem-and-leaf and time series plot of these data. I
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