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Chapter 6: Data and Table 6. 1 Answers to data collection and collation.
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① Investigation and experiment. Consult literature and information on the Internet.

2 Grouping? Number?

(3) What is the minimum number of families? ? ; What is the largest family size?

④ Answer: Direct investigation record.

(5) (see table below)

⑥( 1) Measure, observe and record (2) Maximum difference in September (3) Answer: I also know that there is more precipitation in city B than in city A, and the maximum precipitation in city A is 1.

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By the way, this chapter is quite simple. We're all finished, and I'm fine. ...