OCR GCSE Mathematics key terms

A set of measurements recorded in time order.

The principal together with the total interest.

The sum of all the parts in a ratio; it becomes the denominator when each part is written as a fraction of the whole.

A quantity that is divided between people, groups or categories in a specified ratio.

A rule that changes the position or size of a shape.

A transformation that moves every point through the same horizontal and vertical displacement.

A line that crosses two or more other lines.

A four-sided shape with one pair of parallel sides. Under a graph, its parallel sides can be the heights measured at the ends of a time interval.

An estimate of a curved region's area found by dividing it into strips and replacing each curved strip with a trapezium.

A branching diagram that records possible successive outcomes and their probabilities.

The general direction of a set of values over time, apart from short-term rises and falls.

One repetition of an experiment, such as one roll of a die.

A number in the sequence formed by adding consecutive positive integers, starting at 1; the $n$th triangular number is $\frac{n(n+1)}{2}$.

A relationship comparing two sides of a right-angled triangle for a chosen angle.

Removing digits beyond a specified place without using the next digit to round the number.

A highest or lowest point where a curve changes direction.

A value that has no defined numerical result, such as division by zero.

The symbol $\cup$, used to combine values belonging to either of two sets.

An agreed quantity used to express a measurement, such as a metre, kilogram, second or pound.

A method that first finds the amount corresponding to one unit and then scales to the required number of units.

One of the equal parts made when a whole is divided by the denominator.

The cost of one unit of a product, such as the cost per kilogram or per litre.

A ratio in which one selected part has been made equal to 1, such as $1:n$.

The complete collection of outcomes being considered, represented by the rectangle in a Venn diagram.

The largest boundary of the possible values of a quantity; it is often a limiting value rather than one the quantity can equal.

The value approximately three-quarters of the way through an ordered distribution, with about 75% of the data below it.

A letter or symbol representing a number that may be unknown or able to change.

A quantity with both magnitude and direction, represented by a directed line segment or an arrowed symbol.