Experimental Design and Statistical Analysis Quiz
Test your knowledge on experimental design principles, statistical tests, hypothesis testing, and more. Explore key concepts in research methodology.
#1
Which of the following is a measure of central tendency?
Standard deviation
Variance
Mean
Range
#2
What is the purpose of a control group in an experiment?
To provide a comparison for evaluating the effect of the independent variable
To ensure that all participants receive the same treatment
To control for extraneous variables
To determine the statistical significance of the results
#3
Which of the following is NOT a measure of dispersion?
Standard deviation
Range
Median
Variance
#4
What is the purpose of the null hypothesis in hypothesis testing?
To provide an alternative explanation for the research findings
To suggest that there is no effect or no difference in the population
To confirm the researcher's hypothesis
To determine the sample size needed for the study
#5
What is the purpose of a one-way ANOVA test?
To compare the means of three or more independent groups
To assess the relationship between two continuous variables
To analyze the relationship between two categorical variables
To compare the means of two independent groups
#6
What is the purpose of randomization in experimental design?
To ensure that every participant has an equal chance of being assigned to each experimental condition
To ensure that only certain participants are assigned to each experimental condition
To guarantee that participants are aware of the experimental conditions
To control for extraneous variables
#7
Which statistical test is appropriate for comparing the means of two independent groups?
Paired t-test
Independent t-test
ANOVA
Chi-square test
#8
What is the purpose of statistical power in hypothesis testing?
To determine the sample size needed for a study
To assess the probability of correctly rejecting a false null hypothesis
To calculate effect size
To evaluate the significance level
#9
Which statistical test is appropriate for analyzing the relationship between two categorical variables?
Pearson correlation coefficient
Spearman's rank correlation coefficient
Chi-square test
ANOVA
#10
Which of the following is a non-parametric statistical test?
Student's t-test
Analysis of Variance (ANOVA)
Mann-Whitney U test
Paired samples t-test
#11
What is the purpose of blocking in experimental design?
To ensure that participants are randomly assigned to each experimental condition
To control for extraneous variables by forming homogeneous groups
To ensure that the same participants are used in each experimental condition
To counteract order effects
#12
What is the purpose of a factorial design in experimental research?
To examine the effects of multiple independent variables and their interactions
To control for confounding variables
To randomly assign participants to different experimental conditions
To ensure that all participants receive the same treatment
#13
What is the purpose of blinding in experimental design?
To ensure that participants are aware of the experimental conditions
To prevent experimenter bias and participant expectancy effects
To control for order effects
To eliminate extraneous variables
#14
Which of the following is NOT an assumption of the independent samples t-test?
Normal distribution of the dependent variable
Homogeneity of variances
Independence of observations
Equal sample sizes
#15
What is the purpose of post-hoc tests in ANOVA?
To determine the effect size of the ANOVA
To compare all possible pairs of means after finding a significant result in ANOVA
To select the appropriate statistical test for the data
To determine the sample size needed for the study
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