Ungrouped Data

Updated 28 Sep 2026

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What it is
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  a set of raw data values, typically integers or reals, not yet organized into classes/intervals
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Distinguish from
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  grouped data - observations summarized into classes, commonly recorded in a Frequency Distribution
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  a frequency distribution can also count distinct individual values without grouping them into intervals
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Consequences of grouping
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  class totals generally lose the exact locations of observations within each interval
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  statistics computed from class midpoints are therefore usually approximations
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Related
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  Measures of Central Tendency
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  Frequency Distribution

Linked references 1