PH 521 - Biostatistics » Summer 2021 » Week 5 Quiz

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Question #1
Which statement about the Pearson chi-square test is true?
A.   It is a descriptive statistic
B.   The test statistic for the chi-square test is t
C.   It is a descriptive statistic and the test statistic for the chi-square test is t
D.   It is the statistic you should use when both your predictor (independent) variable and outcome (dependent) variable are categorical
Question #2
A clinical trial is planned to compare an experimental medication designed to lower blood pressure to a placebo. Systolic blood pressures are measured at baseline and again 4 weeks later for the same patients. What test statistics should be performed to measure if there is a statistically significant difference in blood pressures over time?
A.   One sample t test
B.   Paired t test
C.   Chi-square test
D.   Z test

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