Blatchley Chapter 11 Quiz

Quiz Content

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Use this information to answer questions 1 and 2

A nurse is examining the use of two different anti-depressants in her patients. The pharmaceutical representative informed her that each type of drug has two different types of doses: High and Low.

How many factors are in this experiment?

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. For each factor, there are how many levels?

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. Which of the following is true of a two-way ANOVA?

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. In the context of conducting an ANOVA, "Sums of Squares" is an abbreviated term for what?

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. Which of the following is the correct procedure to calculate the mean squares within for an ANOVA?

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This is a source table for what statistical procedure?

Using the source table below, answer questions 6 – 10.

Source df SS MS F
Between 3 2243.9
Within 46 23372.8
Total 49

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. Based on this data, there were _____ participants, and _____ levels in the independent variable

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. What is the Mean Squares between? (p11, 12, 13)

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. What is the Mean Squares within?

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. What is the F-ratio for this study and what is the conclusion if α = .05?

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Using this information to respond to questions 11 - 13.

In a study with 30 participants, a researcher examined the effects of self-awareness and task performance. In three groups, she manipulated whether participants were voice recorded, video recorded, and not recorded when performing a verbal task. The mean scores were 89/100, 72/100, and 93/100, respectively. In each condition, there were 10 participants and each participant only experienced one of the three conditions.

In this study, there were ____ factor(s) and ____ level(s)?

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. dfb is ___ in this study, and dfw is ____?

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. If the F-value is significant, what is the next step for this study?

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. Which of the following best describes why post-hoc tests are needed?

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. Which two elements determine the critical value of the Tukey HSD in a one-way ANOVA?

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. Which of the following is false about Tukey HSD?

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. In a model that has three factors with 2 levels each, it is a...

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. A one-way ANOVA can have up to how many effects, in total?

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Using this information to respond to questions 19 – 20.

Dr. Jaymar is an emotion researcher. He primes (i.e., makes participants think about) participants with either happy or sad emotions and also manipulates the type of environment and provides either a stressful or not stressful environment to his participants. He recruits 60 participants and divides them evenly into his different conditions to examine their preferences in romantic partners.

How is the design best described?

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. Which of the following would represent an interaction effect?

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In the graph below, it is likely that...

Click on the link for Question 21 Graph

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. In a 2 x 3 ANOVA, how many tests of main effects are there?

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. How many effects are being tested in this ANOVA?

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. Based on this source table, how many subjects were in the study, assuming equal number of subjects in each condition?

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. If there are significant effects in an ANOVA such as this one, which of the following is true?

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