The real limits of a number are those points falling one measurement unit above and one measurement unit below that number.

Question

Quizplus · Accepted Answer

The real limits of a number are actually half a measurement unit above and half a measurement unit below that number. This is because measurement error can occur in both directions, so the range of values within which the true value of the number lies is slightly wider than just one unit above or below the observed value.

The Real Limits of a Number Are Those Points Falling