That means that the majority of people have an IQ score between 85 and 115. 1  1 to 24: Profound mental disability. 2  25 to 39: Severe mental disability. 3  40 to 54: Moderate mental disability. 4  55 to 69: Mild mental disability. 5  70 to 84: Borderline mental disability. 6  85 to 114: Average intelligence. 7  115 to 129: Above average; bright.
(September 2015) (Learn how and when to remove this template message) In education, marking on a curve (BE) or grading on a curve (AE) (also referred to as curved grading, bell curving, or using grading curves) is a method of assigning grades designed to yield a Gaussian distribution curve among the students in a class.
The calibration curve is a plot of how the instrumental response, the so-called analytical signal, changes with the concentration of the analyte (the substance to be measured). The operator prepares a series of standards across a range of concentrations near the expected concentration of analyte in the unknown.uch a curve is typically used when an instrument uses a sensor whose calibration varies from one sample to another, or changes with time or use; if sensor output is consistent the instrument would be marked directly in terms of the measured unit.