Exercise 1: Data Interpretation
Table 4: Water Quality vs. Fish Population
Dissolved Oxygen (ppm)
Number of Fish Observed
1. What patterns do you observe based on the information in Table 4?
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
3. What would your experimental approach be to test this hypothesis?
4. What would be the independent and dependent variables?
5. What would be your control?
6. What type of graph would be appropriate for this data set? Why?
7. Graph the data from Table 4: Water Quality vs. Fish Population (found at the beginning of this exercise).
8. Interpret the data from the graph made in Question 7.
Exercise 2: Testable Observations
Determine which of the following observations are testable. For those that are testable:
Determine if the observation is qualitative or quantitative.
Write a hypothesis and null hypothesis.
What would be your experimental approach?
What are the dependent and independent variables?
What are your controls - both positive and negative?
How will you collect your data?
How will you present your data (charts, graphs, types)?
How will you analyze your data? Observations
1. A plant grows three inches faster per day when placed on a window sill than it does when placed on a coffee table in the middle of the living room.
2. The teller at the bank with brown hair and brown eyes is taller than the other tellers.
3. When Sally eats healthy foods and exercises regularly, her blood pressure is 10 points lower than when she eats fatty foods and does not exercise.
4. The Italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm.
5. For the past two days, the clouds have come out at 3 pm and it has