#1
Which of the following is NOT a measure of central tendency?
Range
ExplanationNot a measure of central tendency
#2
Which statistical measure indicates the strength and direction of the relationship between two variables?
Correlation coefficient
ExplanationStrength and direction of relationship between variables
#3
Which type of sampling method involves selecting individuals who are easily accessible and willing to participate?
Convenience sampling
ExplanationSelecting easily accessible and willing participants
#4
In psychological research, what does the term 'reliability' refer to?
The consistency of measurement across repeated trials
ExplanationConsistency of measurement across trials
#5
What is the purpose of random assignment in experimental design?
To ensure that each participant has an equal chance of being assigned to any experimental condition
ExplanationEqual chance of assignment to experimental conditions
#6
What is the purpose of a control group in an experiment?
To serve as a comparison for the experimental group
ExplanationComparison for experimental group
#7
What does a p-value represent in statistical analysis?
The probability of obtaining a sample statistic at least as extreme as the one calculated, assuming the null hypothesis is true
ExplanationProbability of obtaining extreme sample statistic assuming null hypothesis
#8
Which statistical test is most appropriate for determining if there is a significant difference between the means of two independent groups?
Independent samples t-test
ExplanationDetermining significant difference between means of independent groups
#9
Which type of validity assesses whether a measure accurately reflects the theoretical construct it is intended to measure?
Construct validity
ExplanationAssessing accuracy of measuring theoretical construct