Archaeology: Tree-Ring Data The Sand Canyon Archaeological Project, edited by W. D. Lipe and published by Crow Canyon Archaeological Center, contains the stem-and-leaf diagram shown in Figure 2-22. The study uses tree rings to accurately determine the year in which a tree was cut. The figure gives the tree-ring-cutting dates for samples of timbers found in the architectural units at Sand Canyon Pueblo. The text referring to the figure says, “The three-digit numbers in the left column represent centuries and decades a.d.

The numbers to the right represent individual years, with each number derived from an individual sample.

Thus, 124 | 2 2 2 represents three samples dated to a.d. 1242.” Use Figure 2-22 and the verbal description to answer the following questions.

(a) Which decade contained the most samples?

(b) How many samples had a tree-ring-cutting date between 1200 a.d. and 1239 a.d., inclusive?

(c) What are the dates of the longest interval during which no tree-cutting samples occurred? What might this indicate about new construction or renovation of the pueblo structures during this period?AppendixLO1

Transcribed Image Text:

FIGURE 2-22 Tree-Ring-Cutting Dates from Architectural Units of Sand Canyon Pueblo: The Sand Canyon Archaeological Project 120 119 56 0012333333333333333333333333 120 121 2 121 55 122 0011112234444444 122 589 123 012334 123 124 5555555555555556889 122222222222222222222222344 124 5689999999999 0000000000000001111111222 125 125 126 000122222222222224444444 126 555667 127 0111144