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STA 270 Exam Study Guide Solutions

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STA 270 Exam Study Guide Solutions Identify the cases and variables in the situations below, label the variables as categorical or quantitative Asking US citizens whether or not they support gun control - ANSWER-cases: US citizens Categorical Variable: support or not support Identify the cases ...

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  • November 4, 2024
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STA 270 Exam Study Guide Solutions


Identify the cases and variables in the situations below, label the variables as categorical or quantitative




Asking US citizens whether or not they support gun control - ANSWER✔✔-cases: US citizens


Categorical Variable: support or not support


Identify the cases and variables in the situations below, label the variables as categorical or quantitative




Asking college students how many hours of sleep they got last night - ANSWER✔✔-Cases: college

students


Quantitative Variable: hours of sleep


Identify the explanatory and response variables in the situations below




Does meditation reduce stress? - ANSWER✔✔-Explanatory:


Meditation




Response: Stress


Identify the explanatory and response variables in the situations below



Copyright ©Stuvia International BV 2010-2024 Page 1/15

, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024




Is excess energy caused by sugar? - ANSWER✔✔-Explanatory: sugar


Response: energy


Can choosing the right music make wine taste better?




Each of 250 volunteers was assigned at random to one of five rooms where they were asked to taste and

rate a glass of wine. In one of the rooms, no music was playing and a different style of music was playing

in each of the other four rooms. The researchers concluded that cabernet sauvignon is perceived as

being richer and more robust when bold music is played than when no music is heard




Identify the sample under study - ANSWER✔✔-250 volunteers


Can choosing the right music make wine taste better?




Each of 250 volunteers was assigned at random to one of five rooms where they were asked to taste and

rate a glass of wine. In one of the rooms, no music was playing and a different style of music was playing

in each of the other four rooms. The researchers concluded that cabernet sauvignon is perceived as

being richer and more robust when bold music is played than when no music is heard




Classify the study as experimental or observational - ANSWER✔✔-experimental


Can eating a yoghurt a day cause people to lose weight


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