Lab 1

LAB 1

Exercise 1

1. Based on the information in Table 2, the pattern that is observed is only that as the amount of oxygen increases then the population of fish also increases, and that once the oxygen gets greater than 12 then the number of fish can vary.

2. The number of fish is greatest at 12 (ppm) of dissolved oxygen.

3. My experimental approach to test this hypothesis would be to observe each increment of dissolved oxygenated water and count the number of fish that survive using 20 fish per increment.

4. The dependent variable would be 20 fish for each observation of the independent variable of each increment of dissolved oxygen.

5. The control would be the same body of water and same type of fish.

6. A line graph would be appropriate for this type of data set because it displays the data in a self-explanatory way.

7.

8. It is apparent that the greatest number of fish will survive in the water with 12 (ppm) of dissolved oxygen.

Exercise 2

(Determine which hypothesis are testable; for the ones that are-answer the questions that follow)

1. When a plant is placed on a window sill, it grows faster than when it is placed on a coffee table in the middle of the living room.

Hypothesis: A plant will grow faster if placed on a window sill than it would if it was placed on the coffee table in the middle of the living room.

Null Hypothesis: A plant will grow at the same rate whether placed on a window sill or on a coffee table.

Dependent variables: 1 plant in each location

Independent Variables: same kind of plant, same soil, and age of plant

Control: temperature and moisture

How will data be collected? Measure length daily

How will data be presented? Line Graph

How will data be analyzed? By size of each plant from its particular location

2. The teller at the bank with the brown hair and brown eyes and is taller than the other tellers.

(This is not a testable hypothesis because the brown hair and...