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WGU C784 Applied Healthcare Statistics Objective Assessment Prep | Verified Questions and Correct Answers Updated 2025/2026 for Guaranteed Success

HEAL100 Health Care — exam and revision material · Other

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Health Care exam material, 25 pages. Originally published on StudyMerit.

Pages
25
Academic year
2025/2026
Language
English

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WGU C784 APPLIED HEALTHCARE STATISTICS Examination Questions And Correct Answers (Verified Answers) Plus Rationales 2026/2027 Q&A Grade A+ 1. Which level of measurement classifies blood type (A, B, AB, O)? a. Interval b. Ordinal c. Nominal d. Ratio Rationale: Nominal data are categories with no inherent order, such as blood types. 2. The mean is best described as the: a. Middle value b. Arithmetic average c. Most frequent value d. Range of values Rationale: The mean is calculated by summing all values and dividing by the number of observations. 3. Which measure of central tendency is most affected by outliers? a. Mean b. Median c. Mode d. Interquartile range

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Rationale: Extreme values disproportionately influence the mean compared to other measures. 4. A hospital records patient satisfaction on a scale of poor, fair, good, excellent. This data is: a. Nominal b. Ordinal c. Interval d. Ratio Rationale: Ordinal data have ranked categories without equal intervals between them. 5. What does a p - value represent? a. Probability the null hypothesis is true b. Probability of observing results assuming the null hypothesis is true c. Probability the alternative hypothesis is false d. Strength of correlation Rationale: The p - value measures how likely observed data would occur under the null hypothesis. 6. Which graph is best for displaying categorical data? a. Bar chart b. Histogram c. Box plot d. Scatterplot Rationale: Bar charts compare frequencies across categories.

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7. A Type I error occurs when: a. The null hypothesis is rejected when it is true b. The null hypothesis is accepted when it is false c. The sample size is too large d. The p - value is high Rationale: A Type I error is a false positive. 8. What is the primary purpose of inferential statistics? a. Summarize data b. Make conclusions about a population based on a sample c. Organize healthcare data d. Display raw data Rationale: Inferential statistics allow population - level conclusions from sample data. 9. Which measure describes data spread? a. Mean b. Median c. Standard deviation d. Mode Rationale: Standard deviation quantifies variability around the mean. 10. The null hypothesis typically states that: a. There is a relationship b. There is no effect or difference

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