STAT 201 Exam 1 Questions With Correct Answers.

STAT 201 Exam 1 Questions With Correct
Answers

summary or descriptive statistics - CORRECT ANSWER✔✔-statistics to
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make the leap from historical data to story telling; use of DS and charts
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to summarize the data to identity trends
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Inferential Statistics - CORRECT ANSWER✔✔-use of descriptive statistics
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|of a sample to make estimates bout the population.
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Subject - CORRECT ANSWER✔✔-the person or thing we are studying or
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measuring


Variable - CORRECT ANSWER✔✔-characteristic observed of the subject
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Examples of subject - CORRECT ANSWER✔✔-People, STAT 201 students
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Example of Population - CORRECT ANSWER✔✔-US population, all
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students in STAT classes at USC, the group we look at
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Examples of Variable - CORRECT ANSWER✔✔-Height, gender
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, Sample - CORRECT ANSWER✔✔-the set of subjects that we have data
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for


Population - CORRECT ANSWER✔✔-the set of all subjects of interest
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Statistic - CORRECT ANSWER✔✔-numerical summary of a sample; US
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alphabet to represent
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Statistic examples - CORRECT ANSWER✔✔-Mean(𝑥 ),
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proportion(𝑝),median, mode, standard deviation(𝑠), variance(𝑠2),Q1,
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Q3, IQR, etc.
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Parameter - CORRECT ANSWER✔✔-numerical summary of a
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population; greek alphabet used to represent; dont know these values
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Parameter Examples - CORRECT ANSWER✔✔-Mean(𝜇𝑥), proportion(𝜌),
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median, mode, standard deviation(𝜎),variance(𝜎2), Q1, Q3, IQR, etc
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Census - CORRECT ANSWER✔✔-collect data for every individual in the
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population