RHIT Healthcare Statistics and Analytics 4

Question 1

Which statistic measures the spread or variability of a dataset and is calculated as the average of squared deviations from the mean?

Accepted Answer

Variance

Answer

Standard deviation

Answer

Interquartile range

Answer

Range

Question 2

In the context of the Medicare Severity Diagnosis Related Group (MS-DRG) system, what does a higher relative weight indicate?

Accepted Answer

The case requires more resources and generates higher reimbursement

Answer

The patient stayed longer than the geometric mean length of stay

Answer

The patient was discharged against medical advice

Answer

The diagnosis code requires additional documentation

Question 3

A health information professional is reviewing a p-value of 0.03 from a statistical test. What does this mean?

Accepted Answer

There is a 3% probability the observed result occurred by chance if the null hypothesis were true

Answer

There is a 3% probability the null hypothesis is true

Answer

The result is not statistically significant

Answer

The effect size is clinically meaningful

Question 4

Which performance improvement methodology uses DMAIC (Define, Measure, Analyze, Improve, Control) as its framework?

Accepted Answer

Six Sigma

Answer

Plan-Do-Study-Act (PDSA)

Answer

Lean manufacturing

Answer

Total Quality Management (TQM)

Question 5

An RHIT calculates the following: total live discharges = 2,450; total deaths = 50; total length of stay for all patients = 12,250 days. What is the average length of stay?

Accepted Answer

5.0 days

Answer

4.9 days

Answer

5.1 days

Answer

4.8 days

Question 6

What is 'benchmarking' in the context of healthcare quality management?

Accepted Answer

Comparing an organization's performance to best practices or top performers

Answer

Setting a minimum staffing level for patient safety

Answer

Establishing baseline data before a new initiative begins

Answer

Calculating the statistical mean for a set of clinical outcomes

Question 7

Which data quality characteristic ensures that a data element has a value whenever it is required and is not left blank?

Accepted Answer

Completeness

Answer

Accuracy

Answer

Timeliness

Answer

Consistency