DataX Practice Questions - CompTIA DataX (DY0-001) Exam

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Which statistical test is MOST appropriate for determining whether the means of three or more independent groups differ significantly?

One-way ANOVA (Analysis of Variance) followed by a post-hoc test (Tukey HSD) if the null hypothesis is rejected Student's t-test comparing each pair of groups independently Chi-square goodness-of-fit test comparing observed to expected frequencies Pearson correlation coefficient measuring linear association between two continuous variables

Correct Answer:

One-way ANOVA (Analysis of Variance) followed by a post-hoc test (Tukey HSD) if the null hypothesis is rejected

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