Enzyme Experiment Results and Conclusions
Due Date: January 19th (Block 5), January 20th (Blocks 3,4)
RESULTS
This section includes the 3 parts listed below:
1. SUMMARYWrite an explanation of the statistics from your table in paragraph form. Be sure to include a reference to your table and graph at some point in this summary (...as shown in Table 1 ...... ). Your summary should include a topic sentence, identification of the variables,, a description of the statistics done, what the null hypothesis is, whether it was rejected or not, and if your hypothesis was supported or refuted. Make sure you review your original hypothesis and do not change it to match your experimental outcome. This section should beabout 1 page, not including graphs and tables.
2. TWO TABLES:The first table should be just your raw data with averages calculated. IV, DV, and Control groups
should be clearly labeled.This must be done on a computer, not hand drawn.
The second table is a summary of the statistics calculated. You must calculate mean, median, mode, number, range, variance, standard deviation and perform a T-test, so your p-value and T-value should be included. (If you use the website below to perform the T-test, the p-value will also be provided.)
Columns and rows must be straight and neat (typed)
Headings (with UNITS) are required on all columns and rows.
Titles go above the tables, typed in ALLCAPS (TABLE 1: PLANT HEIGHT (cm) VERSUS LIGHT EXPOSURE).
3. GRAPHCan be either a line graph or a bar graph. Line graphs show trends or relationships. Bar graphs are used for comparison.
The independent variable goes on the X-axis; the dependent variable goes on the Y-axis. Label axes with names and units. Include a key.
Titles go below the graph, typed in ALLCAPS (FIGURE 1: PLANT HEIGHT (cm) VERSUS LIGHT EXPOSURE)
* Note: See Appendix regarding descriptive and inferential stats.
CONCLUSIONS
The following questions should be addressed in the conclusion in paragraph form:
What was the purpose of the experiment?
Is the hypothesis supported or refuted?
What do the results mean? (Why was there more enzyme activity in one group compared to another?)
How do your results compare to the results of other student groups in your class?
Was any new information discovered?
What value does this information have to society?
Any possible sources of error?
How could this experiment be improved?
Any other ideas for experimentation?
If something went wrong or your experiment didn’t work, explain why this happened.
This section should be at least 1full page in length.
Appendix: Descriptive and Inferential Statistics
Instructions: Using the raw data that you collected for your project, you now need to perform both descriptive and inferential statistics for your project. In completing this assignment make sure to utilize all resources that are available to you, including the Statistics for Science Research PowerPoint (provided to you in class) and the Statistics for Science Research: Hints, Tips, and Examples packet (located on your teacher’s school webpage…it’s a really BIG document! Don’t print it!).
Descriptive Stats:
Since all projects dealt with quantitative data, you need to calculate the following descriptive stats:
- Mean
- Range
- Variance
- Standard Deviation
- Number
Inferential Stats:
For almost all projects, you will need to perform a t-test (or multiple t-tests depending on the number of experimental groups contained within your project) to determine the statistical significance of your data/results. The following website is one resource that can be utilized to perform the t-test calculations:
If you believe that another inferential statistical test is more appropriate for your data, please see your teacher for further instructions.
Enzyme Experiment
Results and Conclusions Rubric
Points Possible / Points EarnedResults/Summary
/20 points
/ ------Description of statistics, null hypothesis discussion / 15
Support/Refute hypothesis with data/stats / 5
Data Tables of Raw Data and of Stats
/ 10 points / ------Neat, organized, straight lines / 2
Title / 2
Units labeled / 3
Correct statistics used / 3
Graph
/ 5 points / ------Neat, organized, straight lines
/ 1Title / 1
Units labeled / 1
Correct statistics used / 2
Conclusion
/ 20 points / ------Major findings / 5
Support/Refute hypothesis with data / 5
Explanation for findings / 5
Recommendations for improvement / 5
Written Expression/Depth of Analysis
/ 5 pointsFormat
/ 5 points / ------Headings, spelling, spacing, grammar
TOTAL
/ 65 pointsComments: