Average, A number that is representative or typical of the centre of a set of numerical values., Bias, An influence that leads to results which a systematically less or greater than the true value., Bivariate Data, A pair of numerical variables from a data set., Category Data, Data in which the values can be organised into distinct groups, Census, A study that attempts to measure every unit in a population., Cleaning Data, The process of finding and correcting errors in a data set in order to improve its quality., Experiment, A process or study that results in the collection of data., Mean, A measure of centre. Calculated by adding the values and then dividing this total by the number of values., Median, A measure of centre that marks the middle of the data values. Values must be in order., Mode, The value that occurs more frequently than other values., Multivariate Data, A data set that has several variables, Numerical Data, Data in which the values result from counting or measuring., Outlier, A member of a data set whose values lie well away from most of the other members in a data set., Population, A collection of all objects or individuals of interest which have properties that someone wishes to record., Range, A measure of spread that is calculated as the difference between the largest and smallest values., Relationship, A connection between two variables, usually two numerical variables., Sample, A group of objects, individuals or values selected from a population., Sources of Variation, The reasons for differences seen in the values of a varible., Spread, The degree to which values in a distribution of a numerical variable differ from each other., Statistics, The process of finding out more about the real world by collecting and then making sense of data., Variable, A property that may have different values for different individuals or that may have different values at different times.

Maths terminology

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