Explore BrainMass
Share

Explore BrainMass

    Analysis of variance (ANOVA)

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    I have some questions regarding ANOVA procedures.

    Is my following answer correct to this question...
    The ANOVA can be used to test for differences between means when there is
    1. 2 or more IV
    2. 2 or more levels of 1-IV
    3. is only 1-IV
    4. all of the above

    I choose #3, because I think the ANOVA test with one Ind. variable (IV) on 3 or more levels of that IV. But I am not sure because in our class we discussed 2-way ANOVA. I am getting really confused. Can you please explain.

    Another question regarding the ANOVA
    I am comparing the scores of 5 different groups. I find that the ANOVA is significant. What is my best intrepretation?
    1. the means of @ least 2 groups are sign. different from each other
    2. scores do not differ among the groups
    3. all 5 groups differ from each other
    4. none of the above can be determined from the omnibus

    I choose 4, because from what I believe the answer should be is not listed. If the test was sign. then @ least one group would be different among the group. You cannot determine until following POST-HOC that more than one is sign. different (so that rules out 1). #2 is ruled out immed because sign means the NULL is rejected. # 3 cannot be determine until POST-HOC

    The next is just confusing me. I think I am making more of it than it is.
    When comparing the means of 2 groups only, a significant ANOVA result of p<.05 will
    1. the independ. sample t test is not related to the ANOVA
    2. always show a completely different p-valve than the indep. sample t test
    3. always show the identical p-value as the indep. sample t test
    4. sometimes show a completely different p-value than the indep sample t test

    I choose 3

    © BrainMass Inc. brainmass.com October 9, 2019, 6:25 pm ad1c9bdddf
    https://brainmass.com/statistics/analysis-of-variance/87970

    Solution Preview

    The ANOVA can be used to test for differences between means when there is
    1. 2 or more IV
    2. 2 or more levels of 1-IV
    3. is only 1-IV
    4. all of the above

    We can use ANOVA for 2 or more levels of 1-IV (One way anova), for 2 or more IVs (two way anova or n-way anova) and when there is just one IV (one way anova). So the correct answer is #4.

    Another question regarding the ANOVA
    I am comparing the scores of 5 ...

    $2.19