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WorksheetsInferential Statistics Quiz
Total questions: 15
Worksheet time: 8mins
What do inferential statistics allow us to do?
Measure descriptive statistics
Calculate exact results
Infer things about the state of the world
Confirm experimental predictions
What is the significance level used in hypothesis testing according to Fisher's criterion?
0.15
0.01
0.05
0.10
What is a Type I error?
Calculating the wrong test statistic
Failing to detect a true effect
Accepting a false null hypothesis
Rejecting a true null hypothesis
What does effect size measure?
The variance in the data
The sample size needed for a study
The magnitude of an observed effect
The probability of a Type I error
Which test is used to assess normality of distribution?
Friedman's ANOVA
Levene's test
Mann-Whitney test
Kolmogorov-Smirnov test
What is the primary purpose of a t-test?
To compare means between two groups
To analyze variance among multiple groups
To measure correlation between variables
To assess the normality of data
What does a two-way ANOVA analyze?
Three independent variables
Two independent variables
One independent variable
No independent variables
What is the non-parametric equivalent of the independent t-test?
Kruskal-Wallis test
Mann-Whitney test
Friedman's ANOVA
Wilcoxon signed-rank test
What is the consequence of a Type II error?
Incorrectly rejecting a true null hypothesis
Failing to reject a false null hypothesis
Calculating an incorrect effect size
Accepting a false experimental hypothesis
What does statistical power refer to?
The likelihood of detecting an effect
The significance level set for the test
The size of the sample used
The variance explained by the model
Which test is appropriate for comparing three or more groups with different participants?
One-way independent ANOVA
Two-way independent ANOVA
One-way repeated measures ANOVA
Paired samples t-test
What is the main assumption of parametric tests?
Data must be ordinal
Data must be normally distributed
Data must be non-normally distributed
Data must have equal variances
What is the purpose of Levene's test?
To test for normality
To determine sample size
To test for homogeneity of variance
To calculate effect size
What does the Kruskal-Wallis test compare?
Variances of two groups
Variances of three or more groups
Means of three or more groups
Means of two groups
In a one-way repeated measures ANOVA, what is the design?
Same participants in all conditions
Different participants in each condition
Different conditions with no participants
Same conditions with different participants
