#1
Which of the following is NOT a factor influencing human traits?
Genetics
Environment
Socioeconomic status
Agricultural practices
#2
What is the purpose of a control group in an experiment?
To provide a baseline for comparison
To ensure randomization
To manipulate the independent variable
To analyze the effects of confounding variables
#3
Which of the following is an example of a categorical independent variable?
#4
Which of the following is an example of a continuous dependent variable?
Gender
Blood type
Temperature
Eye color
#5
What is the fundamental principle of experimental design?
Randomization
Replication
Blocking
Factorial design
#6
Which statistical analysis technique is commonly used to analyze the effects of multiple factors on a response variable?
Analysis of Variance (ANOVA)
T-test
Chi-square test
Regression analysis
#7
In experimental design, what does 'replication' refer to?
Randomly assigning subjects to different treatment groups
Repeating the entire experiment under the same conditions
Ensuring each treatment is applied to multiple subjects
Ensuring each subject receives all levels of the independent variable
#8
What is a confounding variable in an experiment?
A variable that directly influences the dependent variable
A variable that correlates with both the independent and dependent variables
A variable that varies with the experimental conditions
A variable that remains constant throughout the experiment
#9
Which of the following is NOT a potential source of bias in experimental research?
Selection bias
Measurement bias
Randomization bias
Reporting bias
#10
What is the purpose of blinding in experimental research?
To prevent researchers from knowing which subjects are in each group
To manipulate the independent variable
To ensure randomization
To analyze the effects of confounding variables
#11
What does 'randomization' mean in experimental design?
Ensuring each treatment group has an equal number of subjects
Selecting subjects without any pattern or bias
Repeating an experiment multiple times
Ensuring each subject receives all treatment conditions
#12
What is the main advantage of using a factorial design in an experiment?
It allows for the testing of multiple independent variables simultaneously
It reduces the number of experimental conditions needed
It ensures all subjects receive the same treatment
It eliminates the need for replication
#13
What is a within-subjects design?
An experimental design where each subject experiences all levels of the independent variable
An experimental design where different subjects are assigned to each treatment group
An experimental design that involves blocking
An experimental design that involves randomization
#14
Which of the following is a potential disadvantage of using a within-subjects design?
Increased sensitivity to individual differences
Reduced statistical power
Increased risk of order effects
Difficulty in controlling extraneous variables
#15
What is a Latin square design in experimental research?
An experimental design where each subject experiences all levels of the independent variable
An experimental design that controls for order effects
An experimental design used to reduce the effects of extraneous variables
An experimental design that ensures balance across multiple factors
#16
Which of the following is a disadvantage of using a completely randomized design?
It may not account for individual differences among subjects
It requires a large sample size
It is difficult to implement in practice
It is susceptible to order effects