WGU C784 MATH 1100 Applied Healthcare Statistics COMPREHENSIVE OA EXAM QUESTIONS & ANSWERS

WGU C784 MATH 1100 Applied Healthcare Statistics COMPREHENSIVE OA EXAM QUESTIONS & ANSWERS

1. Which statistical test is most appropriate for comparing
the means of three or more independent groups?
 - A) t-test
 - B) Chi-square test
 - C) ANOVA
 - D) Mann-Whitney U test
 - Answer: C) ANOVA
 - Rationale: ANOVA (Analysis of Variance) is used to
compare the means of three or more independent groups to
determine if there are any statistically significant differences
between the means.
2. In survival analysis, what is the main purpose of a
Kaplan-Meier curve?
 - A) Compare nominal data
 - B) Estimate a population's survival function
 - C) Measure correlation between two variables
 - D) Assess the variability of a dataset
 - Answer: B) Estimate a population's survival function
 - Rationale: Kaplan-Meier curves are used to estimate
the survival function from lifetime data, allowing comparison
of survival rates over time.
3. Which measure of central tendency is most affected by
outliers?
 - A) Mean
 - B) Median
 - C) Mode
 - D) Range
 - Answer: A) Mean