**PART A - LEARNING TO MAKE GRAPHS**- Independent variable along horizontal (X, or abscissa) axis.
- Dependent variable along vertical (Y, or ordinate) axis.

Figure 1.2-1 Example graph 1. Car accidents and snowfall

`p. 14 - 15`# cm of snow 0 7 18 23 25 36 53 # car accidents 4 8 13 15 18 32 45 - Independent variable along horizontal (X, or abscissa) axis.
**PART B - PRACTICE PROBLEM FOR DATA ORGANIZATION AND GRAPHING**`p. 16`Study #1 Adaptations of Leaf Size to Precipitation

**PART C - ADDITIONAL PRACTICE WITH DATA ORGANIZATION AND GRAPHING**`p. 17`Study #2 The Effect of Temperature on the Growth of Beans

Study #3 Ecological Study of Creek X

`p. 18`**Note**: "Clean" organisms require high levels of dissolved oxygen; "polluted" ones can tolerate low oxygen levels.Study #4 The Heights of Students in Biology 1100:

Use data from Measurement Lab.

Organize heights into 5-cm intervals and calculate:- mean: divide sum by # of items (average)
- median: middle value
- mode:
**mo**st frequent value

- mean: divide sum by # of items (average)
**PART D - QUESTIONS**`p. 25`

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