Everyone must wear medical grade gloves in a sterile field. A sterile field is usually used during surgery. A sterile syringe and vial of medication. Surgical hand scrubs remove most bacteria from the skin before gloves are put on.
Standard score. In statistics, the standard score is the signed number of standard deviations by which the value of an observation or data point is above the mean value of what is being observed or measured. Observed values above the mean have positive standard scores, while values below the mean have negative standard scores. The standard score is a dimensionless quantity obtained by subtracting the population mean from an individual raw score and then dividing the difference by the population standard deviation.
Find the raw score for a housing price when the house's z score is 2.5, the average mean for houses in the area is $280,000, and the standard deviation is $12,000. Answer: x= Âµ + ZÏ z-score= $280,000 + (2.5)($12,000)= $300,000 So the raw score is $300,000. Find the raw score for an exam when the z score is 1.8, the average mean for the test is 70, and the standard deviation is 15. Answer: x= Âµ + ZÏ x= 70 + (1.8)(15)= 97 So the raw score is 97. Related Resources. Expected Value Calculator Area Under the Curve Calculator Confidence Interval Calculator ï»¿