NAPLEX: Biostatistics Best Exam Questions With 100% Complete Solutions Rated A+
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Course
NAPLEX: Biostatistics
Institution
NAPLEX: Biostatistics
What is the P-value? - CORRECT ANSWER-Likelihood or probability that chance would produce a difference as large or larger than the one found in the study given that the null is true
What is the null hypothesis? - CORRECT ANSWER-No difference in groups
What is the confidence interval? - CORREC...
NAPLEX: Biostatistics Best Exam
Questions With 100% Complete
Solutions Rated A+
What is the P-value? - CORRECT ANSWER-Likelihood or probability that chance would
produce a difference as large or larger than the one found in the study given that the
null is true
What is the null hypothesis? - CORRECT ANSWER-No difference in groups
What is the confidence interval? - CORRECT ANSWER-Range of values derived from
sample data that has the probability of encompassing the true value
Captures true population parameter.
What does a confidence interval of 95% mean? - CORRECT ANSWER-5% degree of
uncertainty
What should not be included if the confidence interval describing a difference be? -
CORRECT ANSWER-Should not include "0" to be significant
What should not be included if the confidence interval with an odds ratio, risk ratio, or
hazard ratio that compares 2 groups be? - CORRECT ANSWER-Should no include "1"
to be significant
What is the difference between clinical and statistical significance? - CORRECT
ANSWER-Clinical significance reflects the clinical value of the outcome. While statistical
significance reflects the chance of the outcome.
What is correlation? - CORRECT ANSWER-Describes the relationship between two of
more variables which is then plotted on a linear scale.
, What does it mean when the correlation coefficient is negative of positive? - CORRECT
ANSWER-Need to be closer to 1 (if at one, considered perfect)
Negative: Inversely related
Positive: Increase or decrease together
What greek letter is associated with Type I error? - CORRECT ANSWER-α
What is Type I error? - CORRECT ANSWER-Null hypothesis is true yet rejected in
error; p-value <5% for stat sig where shows significant but it really isnt.
What is the dumbed down version of Type 1 error? - CORRECT ANSWER-FAlSE
POSITIVE; Shown to have a difference between two groups but there wasnt;
What does confidence interval play in type 1 error? - CORRECT ANSWER-CI: 1-α (type
1 error)
What is type II error meaning? - CORRECT ANSWER-β, set at 0.1 or 0.2; indication a
willingness to accept a type II error 10 or 20 times in 100 comparisons. When the null
hypothesis is false yet it is accepted in error.
What is type II error in lamen terms? - CORRECT ANSWER-FALSE NEGATIVE; No
difference between the groups when in fact there is a difference.
What is statistical power? - CORRECT ANSWER-WANT BIGGER POWER!
Bigger power means less chance of type II error; more certain the null hypothesis was
correctly rejected
How do you calculate power? - CORRECT ANSWER-1-β
What is the dependent variable? - CORRECT ANSWER-Outcome of interest, which
should change in response to intervention
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