AQA GCSE Mathematics key terms

A value that divides ordered data so that approximately one quarter of the observations lie at or below it.

The smallest positive whole number that is a multiple of each of the given numbers.

The longer of the two arcs joining two points on a circle; its central angle is greater than $180^\circ$.

The quantity of matter in an object, measured in units such as milligrams, grams, kilograms or tonnes.

The total of all the values divided by the number of values.

A single value used to represent the centre or typical value of a data set, such as the mean, median or mode.

The middle value of ordered data, dividing it into a lower half and an upper half.

A system of measurement based mainly on powers of ten, including millimetres, centimetres, metres, grams, kilograms, millilitres and litres.

The point halfway along a line segment, equally distant from its two ends.

The shorter of the two arcs joining two points on a circle; its central angle is less than $180^\circ$.

A whole number and a proper fraction written together, such as $2\frac{1}{4}$.

The class interval with the greatest frequency in grouped data.

The category or outcome with the greatest frequency.

A number obtained by multiplying a given whole number by an integer.

A number multiplied by π, such as 4π or π/2.

A relationship in which one quantity is found by multiplying another by a fixed number.

The number used to multiply one quantity to obtain another.

Events that cannot both happen in the same trial.

Events that cannot both occur in the same trial.

A relationship in which y generally decreases as x increases.

The reciprocal of a number with its sign changed; the negative reciprocal of $m$ is $-1/m$.

A pattern with no clear tendency for y to increase or decrease as x increases.

A rule that gives a term directly from its position number $n$.

A straight line on which numbers increase from left to right.

The number above the fraction line; it represents the quantity being expressed.

The original shape before a transformation.

One of the mathematical processes addition, subtraction, multiplication and division.