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Unformatted text preview: e 1 .5 P revelence o f
obesity among adults in US
from 1960 to 2000. 17 1. Using data from your experiments and the grid provided, design a bar graph that shows the
relationship between the dependent and independent variable for both body parts. Discuss
with your teammates how to design one figure so that it includes the data for the
independent variable for each experiment.
a. What was the independent variable for each experiment? On which axis would you
b. What was the dependent variable? Write it on the appropriate axis.
2. Add a legend to your figure to distinguish newborn and student ratios.
3. Draw, label, and compose a title for your figure.
4. Imagine an experiment similar to the one you have performed where it would be
appropriate to use a line graph. Figure 1.6 18 Exercise 1.B. Scientific Investigation: Experimental Design Applied Interpreting and Communicating Results
The last component of a scientific investigation is to interpret the results and discuss their
implications in light of the hypothesis and its supporting literature. The investigator studies the
tables and graphs and determines if the hypothesis has been supported or falsified. If the
hypothesis has been falsified, the investigator must suggest alternate hypotheses for testing. If the
hypothesis has been supported, the investigator suggests additional experiments to strengthen
the hypothesis, using the same or alternate methods.
Scientists will thoroughly investigate a scientific question, testing hypotheses, collecting data, and
analyzing results, until they are satisfied that they can explain the phenomenon of interest. The
final phase of a scientific investigation is the communication of the results to other scientists.
Preliminary results may be presented within a laboratory research group and at scientific meetings
where the findings can be discussed. Ultimately, the completed project is presented in the form of
a scientific paper that is reviewed by scientists within the field and published in a scientific journal.
The ideas, procedures, r...
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