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.
A sinusoidal curve is the graph of the sine function in trigonometry. A sinusoid is the name given to any curve that can be written in the form. The example at the right is. The cosine wave is also said to be sinusoidal because of the relationship which makes it the sine wave with a horizontal shift.