What is the basic logic of ANOVA?
a. to determine whether a statistically significant difference exists between the means for any two groups in a sample with a given variable regardless of the number of groups
b. to determine precisely how many statistically significant differences actually exist and which ones they are
c. to determine whether a statistically significant difference exists between two percentages, each representing a separate group (sample)
d. to determine whether a statistically significant difference exists between the means for two different questions answered by the same respondents using the same scale
e. to determine whether a statistically significant difference exists between the means from two different groups (either two different samples or two different groups in the same sample)
Answer: a. to determine whether a statistically significant difference exists between the means for any two groups in a sample with a given variable regardless of the number of groups