Two-Way ANOVA 2 (2) Flashcards
If you have three levels of an independent variable, with which two polynomial trend types will SPSS provide you?
The ‘linear’ and ‘quadratic’ polynomial trend types (SPSS is able to trace both a line and a simple curve through such datapoints).
If you have four levels of an independent variable, with which three polynomial trend types is SPSS able to provide you?
The ‘linear’, ‘quadratic’, and ‘cubic’ polynomial trend types.
If an experiment were run to investigate whether the symptoms of panic vary over time following a treatment plan, the independent variable would be time, as assessed at the beginning of the treatment, and then again at weeks 2, 3, and 4, but how many levels would this independent variable have?
Four
What are the first three steps involved in conducting a repeated-measures ANOVA test on SPSS?
Selecting ‘Analyse’, ‘General Linear Model’, then ‘Repeated Measures’.
What is the second step involved in the conduction of a repeated-measures ANOVA test on SPSS?
Naming the within-subjects factor involved in your investigation (the independent variable), and including the number of levels involved in this factor, then clicking on ‘Add’.
What is the third step involved in the conduction of a repeated-measures ANOVA test on SPSS?
Transferring each column of your data into the ‘Within-Subjects Variables’ box.
What is the first step involved after having conducted a repeated-measures ANOVA test on SPSS?
Analysing the descriptive data provided by SPSS.
What is the second step involved after having conducted a repeated-measures ANOVA test on SPSS?
Checking whether Mauchly’s Test of Sphericity is non-significant.
What is the third step involved after having conducted a repeated-measures ANOVA test on SPSS?
Interpreting the ANOVA test’s results by checking the F value corresponding to your independent variable (depending on whether sphericity is assumed) and its significance.
How would the results of an ANOVA be reported?
F(degrees of freedom corresponding to independent variable (depending on whether sphericity is able to be assumed), degrees of freedom corresponding to the error bracket relating to your independent variable (depending on whether sphericity is able to be assumed)) = F statistic, significance.
What does it mean if the results of an ANOVA test are significant?
That we can reject the Null hypothesis (H0) that there is no significant effect of the independent variable on the dependent variable.
What would be the null hypothesis for a one-way ANOVA?
That the mean of the independent variable’s first condition (as it relates to the dependent variable) is equal to the mean of the independent variable’s second condition, which is equal to the mean of the independent variable’s third condition.
What can be tested with planned comparisons tests?
Specific hypotheses.
What is an example of a hypothesis?
“Panic scores will be lower at the end of a treatment plan compared to at the beginning”.
If an experiment were run to investigate whether the symptoms of panic improve over time following a treatment plan, the independent variable would be time, as assessed at the beginning of the treatment, and then again at weeks 2, 3, and 4, what planned comparisons test could we run to further investigate a significant ANOVA result?
A t-test comparing the panic symptoms at the beginning of treatment and at the end of treatment.
