The Error interval is the range of values (between the upper and lower bounds) in which the precise value could be.

An estimate of my height is 176 cm to the nearest cm. That means it could be any height from **175.5 cm** to **176.5cm** and these are called the lower and upper bounds.

The error interval is **175.5 ≤ height < 176.5**

i.e. Lower bound ≤ *x* < Upper bound

Your Turn:

Height of a child’s bike has been measured to be 0.56m to 2 dp. Give the error interval, where the true height of the bike, x, lies.

(do not include units)

Enter your answer here:

≤ x <