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Biostat 2024 Exam Questions & Answers 100% CORRECT
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Biostat 2024 Exam Questions & Answers 100% CORRECT
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Biostat 2024 Exam Questions & Answers100% CORRECT
Name the two types of quantitative variables? - ANSWERS- continuous
- discrete
What is the name for a nominal variable that take on one of two distinct possible values? -
ANSWERSBinary (dichotomous) variable
Name the two most common types of inference based on the sampling distribution of statistics -
ANSWERSConfidence Intervals and Hypothesis Testing
Under a Normal distribution, always and forever, what is the critical value associated with a 95%
confidence - ANSWERS1.96
How does the Rare Event Rule explain hypothesis testing? - ANSWERSIf, under a given assumption, the
probability of an observed event is exceptionally small, we conclude that the assumption is probability
not correct.
What test do biostatisticians use when the expected value of any cell within a contingency table is less
than 5? - ANSWERSfisher's exact test
What two values do you need to know to calculate a Pearson's Chi-square test statistic? -
ANSWERSObserved and Expected values
In what way does one-tailed Chi-squared test correspond to a two-tailed Z test? - ANSWERSThey are
equal
Under what circumstance(s) is it appropriate to use McNemar's Test? - ANSWERSMcNemar's test is used
for paired data
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