Limits of Accuracy

What is Limits of Accuracy?

The interval of values that a rounded measurement could actually have taken. A quantity stated as a to the nearest unit u lies between a minus half u and a plus half u, with the lower endpoint included because it rounds to a, and the upper endpoint excluded because it rounds to the next stated value.

This definition is part of the Number chapter in Cambridge O Level Mathematics (Syllabus D).

Concepts related to Limits of Accuracy

• upper bound
• lower bound
• rounding
• inequality symbols