Unformatted text preview: Biology 103 Lab Homework #3, 9/24/10 Crayfish Lab Results I. Instructions Every student will need to complete this assignment on their own. All involved parties will receive a zero for the assignment if plagiarism is suspected. During the course of the Crayfish Behavior Lab you collected variables related to your hypotheses about anatomy and behavioral dominance. You will now create a results section of a lab report based on your class’s findings. Make sure you use the compiled class data, not just data from your group, or table. This will be a type written paper in which you will be responsible for including 4 tables, or graphs/figures (one for each of your hypotheses). Remember, these figures should be specific to your hypotheses. You should not include a table of the raw class data! Use the instructions below to decide which type of graph(s) will best communicate the data sets collected in lab. You will also need to make sure all tables and figure(s) are numbered and labeled appropriately. Read the instructions carefully and follow all guidelines. As with previous lab homework you will receive T.A. comments, and suggestions on this assignment. It is highly suggested you acknowledge those comments and suggestions, and make changes before submitting your final crayfish paper. Remember, it is your T.A. that will be grading the final paper. A. Pre‐Writing exercises: Graph It! (Graphing Background) 1. This portion of the assignment is optional (NOT TURNED IN), but will give you the background you may need to complete the assignment. This is a general tutorial on graphing. 2. Using the student code that came with your new textbook log into the www.masteringbio.com website. Click on the “Study Area” tab. In chapter 1 (concept 1.3) click on “Graph it: An introduction to graphing”, and complete the exercises. If you do not have access to the website you may work with someone who does. B. Results (The part you turn in): This section will consist of three parts, and is written in past tense (Do not use “I” or “we”). Include all data in the results section that you will reference in the discussion section. Reference figures and tables within the paragraph as you describe your results (Ex. Figure 1 , or Table 2) 1. Start with a short paragraph (1‐2 sentences) to remind the reader about the nature of the research 2. Include one or more paragraphs that describe the results. The data in any table or figure should be summarized in a narrative paragraph. Do not simply state “see results table 2”. Emphasize the results that are important. Describe trends in the data and provide evidence that supports any claims. Again, report trends in data, don’t fill this section with the experimental values collected. Your graphs should be clear enough that your statements can easily be confirmed at a glance. Include any statistics that have been performed. Be careful not to report what you expected to happen/whether your  Biology 103 Lab Homework #3, 9/24/10 hypothesis (prediction) was supported or falsified. You will critique, and discuss the meaning of your results in the discussion section (NOT NOW). 3. Graphs and Tables: Remember to number figures and tables consecutively throughout the paper. Do not provide a graph and table of the same data. C. Table Guidelines: Always include a title, and units of measurement for every table. Variables of the same kind should be read down a column and not across a row. Include only data that are important in presenting the results. Non essential data/calculations should be omitted Remember to number tables consecutively throughout your paper. D. Graph/Figure Guidelines: The independent variable is plotted on the x axis, and the dependent variable, on the y axis. Label the axes with the variable and units of measure. Title your figure (below the graph), and include a legend if necessary (ex. shading or coloring is utilized). Design your graph so that your intervals and range maximize the use of the graph space. Choose the best type of graph to present your data. 1. Line graph: Used to show changes in the quantity of the dependent variable and emphasizes the rise and fall of values over the range. 2. Bar graph: Data are drawn as vertical bars in a series down the x (horizontal) axis. This type of graph is used when the independent variable is measured as groups or non‐
numerical categories. II. Grading: Your TA will be available to assist you, but will not do your work for you. This assignment will be turned in at the beginning of your lab section the week of October 4th 2010. A. 2 Points reminder/nature of research paragraph/sentence B. 4 Points for graphs/tables (1 for each ) C. 4 Points for description paragraph(s) about the results.  ...
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- Spring '10
- Biology, Crayfish Lab Results