MANOVA Multivariate Tests
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What is the primary advantage of using ANOVA over multiple t-tests when comparing means between multiple groups?

  • ANOVA is only used for metric variables
  • ANOVA is only used for categorical variables
  • ANOVA is less sensitive to Type I errors (correct)
  • ANOVA is more sensitive to Type I errors
  • In a mixed-design ANOVA, what is the combination of conditions?

  • Between-groups and multivariate
  • Between-groups and one-way
  • Between-groups and within-groups (correct)
  • Within-groups and one-way
  • What is the purpose of the F statistic in ANOVA?

  • To determine if there is a significant effect of the categorical variables on the metric variable (correct)
  • To determine the effect size of the mean difference
  • To determine the direction of the relationship between variables
  • To determine the significance of the interaction between variables
  • What is the ideal scenario for running ANOVA in terms of participants?

    <p>Equal numbers of participants in each group</p> Signup and view all the answers

    What is the term for the error of failing to find a significant difference where one does in fact exist in reality?

    <p>Type II error</p> Signup and view all the answers

    What is the purpose of the partial η2 (partial eta squared) in ANOVA?

    <p>To determine the effect size of the mean difference</p> Signup and view all the answers

    What is the term for the error of finding a significant difference where one does not exist in reality?

    <p>Type I error</p> Signup and view all the answers

    What type of ANOVA is conducted on one independent variable?

    <p>One-way ANOVA</p> Signup and view all the answers

    What is the purpose of Levene's test in ANOVA?

    <p>To test the homogeneity of variance</p> Signup and view all the answers

    What is the advantage of using multivariate tests in ANOVA?

    <p>To test the effect of multiple dependent variables simultaneously</p> Signup and view all the answers

    What is the purpose of including Mean Square Error (MSE) in an ANOVA?

    <p>To provide an estimate of the statistical error present in the ANOVA</p> Signup and view all the answers

    What is the primary difference between ANOVA and ANCOVA?

    <p>The control for another metric dependent variable</p> Signup and view all the answers

    In MANOVA, what is the assumption of homogeneity related to?

    <p>The variance / covariance matrix</p> Signup and view all the answers

    What is the purpose of running a multivariate test such as MANOVA?

    <p>To look for mean differences in multiple dependent variables</p> Signup and view all the answers

    What is the primary advantage of using MANOVA over running multiple ANOVA?

    <p>It provides a quick way to run multiple ANOVA without thinking about the relationships between the dependent variables</p> Signup and view all the answers

    What is the Levene's test used for in the context of MANOVA?

    <p>To test for homogeneity of the variance / covariance matrix</p> Signup and view all the answers

    What is the purpose of estimated marginal means in MANOVA?

    <p>To display the means for each level of the independent variables</p> Signup and view all the answers

    When testing for specific effects in MANOVA, what is the purpose of the Post Hoc option?

    <p>To follow up on significant interactions or main effects</p> Signup and view all the answers

    What is the primary limitation of interpreting complex MANOVA designs?

    <p>The difficulty in interpreting complex graphs</p> Signup and view all the answers

    What is the purpose of the Descriptive statistics option in MANOVA?

    <p>To provide a summary of the means and standard deviations of the dependent variables</p> Signup and view all the answers

    What is the purpose of conducting the F test assessing Box's M?

    <p>To ensure the assumption of homogeneity of variances is met</p> Signup and view all the answers

    What is the main outcome of a MANOVA?

    <p>Results indicating group differences in dependent variables</p> Signup and view all the answers

    What do estimated marginal means aim to control for in ANOVA?

    <p>Independent variables</p> Signup and view all the answers

    What is the primary difference between planned contrasts and post hoc testing?

    <p>Timing of conducting the tests</p> Signup and view all the answers

    Which type of contrast is often used in ANOVA designs to compare each group to a baseline group?

    <p>Simple contrasts</p> Signup and view all the answers

    What do Tukey's test and Student-Newman-Keuls (SNK) testing primarily differ in?

    <p>Control of Type I statistical errors</p> Signup and view all the answers

    Which statistical test aims to ensure equality of variances in ANOVA?

    <p>Levene's test</p> Signup and view all the answers

    What does an interaction term in ANOVA represent?

    <p>Multiplicative effect of independent variables</p> Signup and view all the answers

    How do estimated marginal means differ from raw means in ANOVA?

    <p>Control for other variables</p> Signup and view all the answers

    When is it appropriate to use complex polynomial contrasts in ANOVA?

    <p>When comparing multiple groups simultaneously</p> Signup and view all the answers

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