This preview shows page 1. Sign up to view the full content.
Unformatted text preview: esults, analyses, and conclusions of all scientific investigations are
critically scrutinized by other scientists. Because of this, science is sometimes described as
meaning that errors that may occur are usually discovered within the scientific
Scientific communication, whether spoken or written, is essential to science. During this laboratory
course, you often will be asked to present and interpret your results at the end of the laboratory
period. Additionally, you will write components of a scientific paper for many lab topics. In
Appendix A at the end of the lab manual, you will find a full description of a scientific paper and
instructions for writing each section. Using your tables and figures, analyze your results and draw your conclusions.
1. Did your data suggest allometric growth or isometric growth for head circumference? For arm
length? 2. Write a summary statement for the experiment using your results to support or falsify your
hypotheses. Biology 6C 19 3. Critique your experiment. What weaknesses do you see in the experiment? Suggest
improvements. 4. Suggest additional and modified hypotheses that might be tested. Briefly describe your next
experiment. Questions for Review
1. Review the major components of an experiment by matching the following terms to the correct
definition: control, controlled variables, level of treatment, dependent variable, replication,
procedure, prediction, hypothesis, independent variable.
a) Variables that are kept constant during the experiment (variables not being manipulated)
b) Tentative explanation for an observation
c) What the investigator varies in the experiment (for example, time, pH, temperature,
d) Process used to measure the dependent variable
e) Appropriate values to use for the independent variable
f) Treatment that eliminates the independent variable or sets it at a standard value
g) What the investigator measures, counts, or records; what is being affected in the
h) Number of times the experiment is repeated
20 Statement of the expected results of an experiment based on the hypothesis
Exercise 1.B. Scientific Investigation: Expe...
View Full Document