Principles of Experimental Design in Biological Research Quiz
Test your knowledge on experimental design principles. Questions on replication, statistical tests, control groups, blinding, and more.
#1
Which of the following is a key principle of experimental design?
Randomization
Data analysis
Sample size determination
Ethical considerations
#2
What does 'replication' refer to in experimental design?
Repeating the entire experiment
Using different experimental conditions
Using the same experimental conditions multiple times
Changing the variables in each trial
#3
What is the purpose of a control group in an experiment?
To provide a baseline for comparison
To ensure that the experiment is conducted ethically
To analyze the data statistically
To randomize the subjects
#4
Which statistical test is commonly used to compare means of two or more groups in experimental studies?
Chi-square test
t-test
ANOVA
Regression analysis
#5
What is a 'crossover design' in experimental research?
An experimental design involving multiple treatments given in a random order
An experimental design where subjects serve as their own controls
An experimental design where the treatment is applied to one group and not to another
An experimental design where researchers are blinded to the treatment groups
#6
What is 'power' in the context of experimental design?
The significance level of the test
The probability of detecting an effect when it truly exists
The number of subjects in the study
The range of values of the dependent variable
#7
In a factorial experiment with two factors, each with two levels, how many treatment combinations are there?
#8
What is the purpose of a pilot study in experimental research?
To test the feasibility of the main study
To analyze the data collected in the main study
To recruit participants for the main study
To publish preliminary results
#9
What is 'allocation concealment' in experimental research?
The process of keeping the subjects unaware of the treatment assignments
The process of randomly assigning subjects to treatment groups
The process of ensuring that the experimenters are unaware of the treatment assignments
The process of preventing researchers from influencing which treatment a subject receives
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