# Lab 1 Essay

812 Words Sep 28th, 2012 4 Pages
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Exercise 1: Data Interpretation
Table 1: Water Quality vs. Fish Population
Dissolved Oxygen 0 2 4 6 8 10 12 14 16 18
Number of Fish Observed 0 1 3 10 12 13 15 10 12 13

1. What patterns do you observe based on the information in Table 1?

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.

2.

3. What would your experimental approach be to test this hypothesis?

4. What are the independent and dependent variables?

5. What would be your control?

6. What type of graph would be appropriate for this data set?

7.
When Sally eats healthy foods and exercises regularly, her blood pressure is 10 points lower than when she does not exercise and eats unhealthy foods. Testable
H: People that eat healthy and exercise regularly will have significantly lower blood pressure than people who do not eat healthy or 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 started raining at 3:15 pm. Testable (This is a tough one)
H: When clouds come out at 1500 hours plus or minus 15 minutes, Rain will happen 15 minutes after the observed clouds.
.

6. George did not sleep at all the night following the start of daylight savings. Not testable
Exercise 3: Conversion
For each of the following, convert each value into the designated units. 1. 46,756,790 mg = _______ kg
2. 5.6 hours = _______ seconds
3. 13.5 cm = ________ inches
4. 47 °C = ______ °F

Exercise 4: Accuracy and Precision
1. During gym class, four students decided to see if they could beat the norm of 45 sit-ups in a minute. The first student did 64 sit-ups, the second did 69, the third did 65, and the fourth did 67. 2. The average score for the 5th grade math test is 89.5. The top 4th graders took the test and scored 89, 93, 91 and 87.
2. Yesterday the temperature was 89 °F, tomorrow it’s supposed to be 88°F and the next day it’s supposed to be