#1
Which of the following is NOT a characteristic of a well-designed experiment?
Random assignment of subjects to groups
Use of a control group
Limited sample size
Careful measurement of variables
#2
What is the purpose of a control group in an experiment?
To provide a standard of comparison
To manipulate independent variables
To measure dependent variables
To eliminate the need for randomization
#3
Which of the following is NOT an essential component of an experiment?
Independent variable
Dependent variable
Hypothesis
Extraneous variable
#4
Which of the following is NOT a common measure of central tendency?
#5
What is the difference between an independent variable and a dependent variable?
Independent variable is manipulated; dependent variable is measured
Dependent variable is manipulated; independent variable is measured
Both are manipulated
Both are measured
#6
Which of the following is NOT a potential source of bias in an experiment?
Confirmation bias
Selection bias
Blinding
Randomization
#7
What is the purpose of a pilot study in experimental research?
To test the feasibility of the main study
To manipulate independent variables
To measure dependent variables
To provide conclusive results
#8
Which of the following is an example of a quasi-experimental design?
Randomized controlled trial
Before-and-after study without a control group
Double-blind study
Cross-sectional study
#9
Which of the following is a potential ethical consideration in experimental research involving human subjects?
Deception of participants
Providing informed consent
Maintaining confidentiality of data
All of the above
#10
What is the purpose of blinding in experimental research?
To ensure that participants are unaware of which treatment they are receiving
To manipulate independent variables
To measure dependent variables
To decrease the likelihood of replication
#11
What is a factorial design in experimental research?
An experiment with multiple levels of an independent variable
An experiment that combines multiple independent variables
An experiment conducted in a factorial structure
An experiment with a single level of an independent variable
#12
What is the purpose of random assignment in experimental research?
To ensure that all participants receive the same treatment
To increase the likelihood of bias
To control for individual differences among participants
To reduce the need for a control group
#13
Which of the following is a potential limitation of experimental research?
Difficulty establishing cause-and-effect relationships
High external validity
Easily controlled variables
Low control over extraneous variables
#14
What is the purpose of replication in experimental research?
To reduce the likelihood of chance findings
To increase the complexity of the experiment
To decrease the generalizability of the findings
To eliminate the need for statistical analysis
#15
What is the difference between internal validity and external validity in experimental research?
Internal validity refers to the generalizability of findings; external validity refers to the accuracy of measurements
Internal validity refers to the accuracy of measurements; external validity refers to the ability to draw causal inferences
Internal validity refers to the ability to draw causal inferences; external validity refers to the generalizability of findings
Internal validity refers to the accuracy of measurements; external validity refers to the generalizability of findings
#16
What is the purpose of statistical analysis in experimental research?
To make inferences about population parameters
To manipulate independent variables
To measure dependent variables
To eliminate the need for replication