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Exam (elaborations)

PSU STAT 200 EXAM 1 QUESTIONS WITH 100% CORRECT ANSWERS

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PSU STAT 200 EXAM 1 QUESTIONS WITH 100% CORRECT ANSWERS

Institution
STAT 200
Course
STAT 200









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Institution
STAT 200
Course
STAT 200

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Uploaded on
December 5, 2025
Number of pages
11
Written in
2025/2026
Type
Exam (elaborations)
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Questions & answers

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IQR calculation


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Q3 - Q1




Sample


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n - observations that are actually obtained (surveyed number of people)




Sample survey

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Sample of a census




Stat principle 5


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Cause/effect conclusions cannot be made about observational studies




Variance


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Subtract the mean from each unit of data, square it, add them up, then
divide it by your sample set (n) minus 1




Inferential methods


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Make inferences about populations




Observational study


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