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Exam (elaborations)

BSAN 202 Final Exam Questions and Answers

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BSAN 202 Final Exam Questions and Answers nonresponse bias - Answer-bias introduced to a sample when a large fraction of those sampled fails to respond Causation - Answer-A causes B Correlation - Answer-A and B are caused by changed in C (which may or may not be known) Cofounding - Answe...

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  • August 16, 2024
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BSAN 202 Final Exam Questions
and Answers
nonresponse bias - Answer-bias introduced to a sample when a large fraction of those
sampled fails to respond

Causation - Answer-A causes B

Correlation - Answer-A and B are caused by changed in C (which may or may not be
known)

Cofounding - Answer-B is caused by changed in A and C which may not be known

Confidence Interval test for π - Answer-πhat +- (1.96)(sqrt((π(1-π)/n))

Confidence Interval for mean (σ known) - Answer-x̅ +- 1.96(σx)
σx = σ/(sqrt(n)

CI for mean (unknown σ) - Answer-x̅ +- (t(n-1..025))Sx̅
Sx̅ = s/sqrt(n)

Binomial Distribution Conditions - Answer-1) series of independent trials
2)success or failure
3) Probability of success is constant

P(x) formula for binomial - Answer-P(x) = (ncx)∏^x(1-∏)^n-x

Outcomes - Answer-all the possible results of a situation

Events - Answer-specified results of a situation

U - Answer-or

n - Answer-and

Reliability (consistency) - Answer-to eliminate chance by having more data (n or
censurs)

Validity/Accuracy - Answer-to eliminate bias by having fair representation ex)random
sampling

x^2 test statistic number - Answer-3.84

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