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Ashworth College *

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PS370

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Statistics

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Jan 9, 2024

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docx

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8

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[07] Lesson 8 Exam - Results Attempt 1 of 2 Written Dec 14, 2023 10:40 AM - Dec 14, 2023 10:51 AM Attempt Score 95 / 100 - 95 % Overall Grade (Highest Attempt) 95 / 100 - 95 % Question 1 5 / 5 points In a factorial design, the notation "2 X 3 X 2" tells us that the design has __________ independent variables. Question options: 3 12 7 9 Question 2 5 / 5 points In a randomized 2 X 2 factorial design, we test for main effects by: Question options: comparing mean scores for the matrix of cells. comparing mean scores of the various levels of each factor.
comparing the raw scores of each participant. finding the mean scores for the entire sample. Question 3 5 / 5 points The essential issue in interactions is to: Question options: determine whether two factors influence the dependent variable differently when they co-occur than when they occur separately. understand how two main effects can cause an interaction. determine how two co-occurring factors influence the independent variable. determine which of the factors occurs first. Question 4 5 / 5 points If two independent variables have an effect on each other in a factorial research design, we are primarily concerned about their __________ effect. Question options: contradictory cohort interactive cohort None of the above Question 5 5 / 5 points If the state of Utah were to use an interrupted time-series design to study the effects of raising its speed limit to 65 mph, what type of confounding variables might present a problem? Question options: Confounding due to selection and cohort effects Confounding due to history and instrumentation
Confounding due to maturation and testing Confounding due to regression to the mean Question 6 5 / 5 points In the type of mixed design in which both manipulated and nonmanipulated factors are included, the critical issue is: Question options: a statistical one. to use care in interpretation of results. to interpret main effects before interactions. to make sure the same number of participants is used in each group. Question 7 0 / 5 points Even though there are many different F-ratios, each F-ratio represents a comparison of: Question options: overall variance to within-groups variance. between-groups variance to within-groups variance. overall variance to between-groups variance. main effects to interactions. Question 8 5 / 5 points In a crossover effect, maturation is an unlikely alternative hypothesis because: Question options: maturation cannot affect the control group. maturation cannot affect the experimental group. if maturation were responsible, it is unlikely that the effect would markedly differ for both groups.
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