Which test should be used to determine whether there are differences between the means of several groups that cannot be segmented according to two different explanatory variables?
A)a one-way ANOVA
B)a two-way ANOVA
C)multiple comparisons procedures (without contrasts)
D)multiple comparisons procedures (with contrasts)

Question

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A one-way ANOVA is used to determine whether there are differences between the means of several groups that cannot be segmented according to two different explanatory variables. It is designed to compare the means of three or more groups to see if there is a significant difference between them. Two-way ANOVA is used when there are two or more explanatory variables, and multiple comparisons procedures are used to compare the means of two or more groups. However, when there is only one explanatory variable or factor, a one-way ANOVA is typically the best choice.

Which Test Should Be Used to Determine Whether There Are