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.
The Raw and Percent-Correct Score. A raw score is the total number of score points a test taker obtains by answering. questions correctly on a test. A percent-correct score represents the percentage of. questions a test taker answered correctly on a test. For example, if a test taker answered. 20 out of 50 questions on a test correctly, then his or her percent-correct score would be. 40%. The raw score, in this example, is 20. The percent-correct score can be considered.