Edexcel GCSE Statistics · 1ST0
Specification 1b.04 · Paper 1, Paper 2
Revise: Primary and secondary dataRounding removes detail. A time published as 70 seconds to the nearest second is not necessarily exactly 70 seconds.
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GCSE Statistics · key term
Replacing a numerical value with a nearby value at a chosen level of precision, such as the nearest second.
Used by Edexcel
Specification 1b.04 · Paper 1, Paper 2
Revise: Primary and secondary dataRounding removes detail. A time published as 70 seconds to the nearest second is not necessarily exactly 70 seconds.
When discussing rounding, explain the consequence: exact values are lost, so small differences may be hidden.
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