Chapter
1. Line Graphs
Part A: Background
Graphing Tutorial
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In this tutorial, we are going to examine the relationship between several water quality parameters, specifically dissolved oxygen, date, and temperature. These are some of the measures that are typically used to assess the health of aquatic environments and the impacts of human activity.
Part B: Examine the Data Set
Let’s look at seasonal variation in dissolved oxygen in a wetland in the Everglades.
Date |
Dissolved Oxygen (mg/l) |
1/5/2009 |
6.92 |
1/20/2009 |
5.51 |
2/2/2009 |
10 |
3/2/2009 |
9.69 |
4/14/2009 |
4.29 |
5/12/2009 |
6.23 |
6/8/2009 |
2.89 |
7/6/2009 |
2.37 |
8/3/2009 |
3.27 |
9/14/2009 |
3.85 |
10/12/2009 |
3.62 |
11/9/2009 |
5.17 |
12/7/2009 |
3.35 |
1/11/2010 |
9.22 |
3/9/2010 |
9.4 |
4/13/2010 |
3.65 |
05/10/2010 |
2.96 |
06/08/2010 |
2.17 |
07/13/2010 |
0.83 |
08/09/2010 |
1.2 |
09/13/2010 |
2.34 |
10/12/2010 |
4.96 |
11/08/2010 |
2.62 |
12/13/2010 |
7.29 |
Table
Question
1.1
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Question
1.2
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Activity results are being submitted...
Part C: Build the Graph
Instructions: Create a graph below. Begin by giving it a relevant title. Label the X axis as “Date”, and the the Y axis as "Dissolved Oxygen mg/l". Input the actual data into the graph. Connect each of the points to make a continuous line graph.
Date |
Dissolved Oxygen (mg/l) |
1/5/2009 |
6.92 |
1/20/2009 |
5.51 |
2/2/2009 |
10 |
3/2/2009 |
9.69 |
4/14/2009 |
4.29 |
5/12/2009 |
6.23 |
6/8/2009 |
2.89 |
7/6/2009 |
2.37 |
8/3/2009 |
3.27 |
9/14/2009 |
3.85 |
10/12/2009 |
3.62 |
11/9/2009 |
5.17 |
12/7/2009 |
3.35 |
1/11/2010 |
9.22 |
3/9/2010 |
9.4 |
4/13/2010 |
3.65 |
05/10/2010 |
2.96 |
06/08/2010 |
2.17 |
07/13/2010 |
0.83 |
08/09/2010 |
1.2 |
09/13/2010 |
2.34 |
10/12/2010 |
4.96 |
11/08/2010 |
2.62 |
12/13/2010 |
7.29 |
Table
Question
1.3
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Part D: Apply Skills
There appears to be a relationship between season and dissolved oxygen levels. Consider how a graph showing the rise and fall of temperatures with the seasons would overlap with your graph.
Date |
Dissolved Oxygen (mg/l) |
1/5/2009 |
6.92 |
1/20/2009 |
5.51 |
2/2/2009 |
10 |
3/2/2009 |
9.69 |
4/14/2009 |
4.29 |
5/12/2009 |
6.23 |
6/8/2009 |
2.89 |
7/6/2009 |
2.37 |
8/3/2009 |
3.27 |
9/14/2009 |
3.85 |
10/12/2009 |
3.62 |
11/9/2009 |
5.17 |
12/7/2009 |
3.35 |
1/11/2010 |
9.22 |
3/9/2010 |
9.4 |
4/13/2010 |
3.65 |
05/10/2010 |
2.96 |
06/08/2010 |
2.17 |
07/13/2010 |
0.83 |
08/09/2010 |
1.2 |
09/13/2010 |
2.34 |
10/12/2010 |
4.96 |
11/08/2010 |
2.62 |
12/13/2010 |
7.29 |
Table
Question
1.4
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Question
1.5
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Activity results are being submitted...