Twenty-five patients were seen in the emergency room yesterday. The number of clinical laboratory and X-ray procedures performed on each patient were recorded as: 5, 3, 7, 4, 6, 7, 2, 1, 4, 6, 3, 3, 2, 2, 5, 7, 4, 5, 3, 6, 2, 1, 4, 3, 5.

Calculate: Mean (arithmetic) number of lab and X-ray procedures per patient.

b. Weighted Mean If certain scores are more significant than others, they can be assigned a weight (W), depending on their importance. Weighted Mean Formula: