Mean Mode and Median

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Mean, Mode and Median Ungrouped and Grouped Data Ungrouped Data refers to raw data that has been ‘processed’; so as to determine frequencies. The data, along with the frequencies, are presented individually. Grouped Data refers to values that have been analysed and arranged into groups called ‘class’. The classes are based on intervals – the range of values – being used. It is from these classes, are upper and lower class boundaries found. Mean Mean The  ‘Mean’ is the total of all the values in the set of data divided by the total number of values in a set of data. The arithmetic mean (or simply "mean") of a sample is the sum the sampled values divided by the number of items in the sample.  x is the value of a member of the set
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