Terms in this set (6)

When direct experimentation is not possible, scientists modify the scientific method. If you want to find evidence for an answer or an answer itself then you construct a hypothesis and test that hypothesis in an experiment.

Terms in this set (6)

1. Research the Problem.
2. Observe and record.
3. Make a hypothesis.
4. Identify the problem.
5. Arrive at a conslusion.
6. Test the hypothesis.

1. Step One: Ask a Question. Develop a question or problem that can be solved through experimentation.
2. Step Two: Form a Hypothesis. Predict a possible answer to the problem or question.
3. Step Three: Test the Hypothasis.
4. Step Four: Analyze the Results.
5. Step Five: Draw a conclustion.
6. Step Six: Share the Results.

The third step is the development of an explanation for the results of the analysis. Such an explanation is called a hypothesis. Often it is called a “working hypothesis” to emphasize that it is only a tentative proposal. An essential aspect of a scientific hypothesis is that it must be testable.

Scientific method is to ask questions to find answers. Can narrow down the list and raise new questions. Experimental: Manipulating the situation and can control it. More effective but hard to do with nutritional sciences. Cannot generalize the results.

Evidence-Based Approach to Nutrition Although a lengthy process, the scientific method is a productive way to define essential nutrients and determine their ability to promote health and prevent disease.

Getting the same result when an experiment is repeated is called replication. If research results can be replicated, it means they are more likely to be correct.

Replicates can be used to measure variation in the experiment so that statistical tests can be applied to evaluate differences. Averaging across replicates increases the precision of gene expression measurements and allows smaller changes to be detected. Replicates improve the measurement of variation.

Scientists repeat experiments for reliability. The experiment must be repeated for the scientist to develop a theory. One experiment does not prove your hypothesis..

Replication. Occurs when each treatment is applied to more than one experimental unit; ensures the effect of a treatment is not due to some characteristic of a single experimental unit.