In relation to the principles of experimentation:
(a) What is meant by the term hypothesis?
(b) Explain what is meant by double-blind testing - Leaving Cert Biology - Question 2 - 2019
Question 2
In relation to the principles of experimentation:
(a) What is meant by the term hypothesis?
(b) Explain what is meant by double-blind testing.
(c) Explain the nec... show full transcript
Worked Solution & Example Answer:In relation to the principles of experimentation:
(a) What is meant by the term hypothesis?
(b) Explain what is meant by double-blind testing - Leaving Cert Biology - Question 2 - 2019
Step 1
What is meant by the term hypothesis?
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Answer
A hypothesis is a proposed explanation or an educated guess regarding an observation or phenomenon. It is testable and verifiable, serving as a foundation for experimentation.
Step 2
Explain what is meant by double-blind testing.
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Answer
Double-blind testing refers to an experimental procedure where neither the participants nor the experimenters know which participants are receiving the treatment and which are receiving a placebo. This method helps to eliminate bias in the results.
Step 3
Explain the necessity for random selection.
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Random selection is crucial as it reduces bias and enhances the reliability of the results. By randomly selecting participants, each individual has an equal chance of being included, ensuring that the sample accurately represents the population.
Step 4
Give two other features of good experimental design.
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A control group to compare against the experimental group.
A procedure that only varies one factor at a time to isolate the effects of the independent variable.
Step 5
Where are the results of scientific research usually first published?
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The results of scientific research are typically first published in a scientific journal or on a recognized scientific publication website.
Step 6
Why is it important that scientists publish the results of their research?
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Publishing research results is vital for peer review, allowing others to learn from the findings. It also enables replication of the study, thereby solidifying the validity of the research and contributing to the broader scientific knowledge.
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