A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable = Instru) and measured their anxiety (variable = Anxiety) during the exam. He also noted the grade of exam they were taking (in the UK, musical instrument exams are known as ‘grades’ and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when controlling for the grade of the exam. What analysis should he use?

a. Analysis of covariance.
b. Independent analysis of variance.
c. Repeated measures analysis of variance.
d. Mixed analysis of variance.


a. Analysis of covariance.

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Vitamin C enhances the absorption of both iron and calcium from their food sources

a. True b. False Indicate whether the statement is true or false

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Tanya is a middle school student. Her strengths include goal setting and self-monitoring. She tends to act as a mediator, and uses self-reflection and self-discipline. According to Gardner, which of the following is most likely Tanya's strongest disposition?

a. Musical b. Intrapersonal c. Interpersonal d. Naturalist

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Audrey examines students' learning of science principles from interactive games. She randomly assigns the fifth grade students in her study to a control condition with no play time, a timed play condition, or an unlimited time play condition. She also groups her students into either high or low ability groups. She measures her students with a knowledge pretest, a post-test, and a delayed

post-test. Which of the following is an independent variable in Audrey's study? a. Ability b. Fifth grade c. Post-test exam d. Science principles

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A moderate hearing loss is measured between:

a) 16-25 decibels b) 26-40 decibels c) 41-55 decibels d) 55-70 decibels

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