This question aligns with Measurement and Analysis , particularly understanding statistical concepts used in patient experience data interpretation. Standard deviation measures the spread or variability of data points around the mean . Option C is correct because when responses become more similar, they cluster more tightly around the mean, resulting in less variability and therefore a smaller standard deviation . This reflects greater consistency in patient responses, which can indicate more uniform experiences. Option A is incorrect because the mean does not necessarily increase. Option B incorrectly links standard deviation to median and mode changes. Option D contradicts the concept of similarity. CPXP emphasizes that understanding data distribution and variability is essential for accurately interpreting patient experience results and identifying areas of consistency or variation in care delivery.