NE-BC Data Analysis Practice Questions (30 Flashcards)

This is a **Shift**. A shift is defined as **6 or more consecutive points** either all above or all below the median. Points that fall exactly on the median are ignored and do not count toward the 6 points, nor do they break the shift. This indicates a non-random change in the process that warrants investigation. ANCC Strategy: Distinguish shifts (location relative to median) from trends (direction of movement).

**Yes.** This is a **Too Few Runs** signal. A run is a sequence of points on one side of the median. If the number of runs is significantly less than expected for the total number of data points (based on a standard probability table), it indicates a non-random change, such as a shift or a trend, is occurring in the process. This is a high-yield concept for identifying non-random variation before it becomes visually obvious.

The nature of the data (Continuous vs. Categorical). Histograms are used for continuous data (e.g., time, weight, age) to show the distribution, spread, and variance of a single variable. Pareto charts are used for categorical/nominal data (e.g., types of errors, reasons for falls) to prioritize. Since Time to Discharge is a continuous measurement, a histogram is the appropriate choice to visualize the central tendency and identify if the process is skewed or has outliers.

This indicates increased process instability and unpredictable variation. A wide, multi-modal distribution (multiple peaks) suggests that the new staffing model has introduced inconsistent practices or that different units/shifts are applying the model differently. The executive must investigate the sources of this new variation (special cause variation) to stabilize the process. A stable process is a prerequisite for meaningful improvement.

The purpose is to provide a holistic view of organizational health. Internal data (e.g., hours per patient day, vacancy rates) focuses on operational efficiency and process. External data (e.g., HCAHPS, Leapfrog grades) focuses on outcomes and consumer perception. ANCC emphasizes that Nurse Executives must not lead in a vacuum; they must align internal operations with external regulatory and consumer-driven performance standards.