Question

Question #1f0de

Answer 1

It's the deviation for with the actual value lies.

Explanation:

Say you have a thermometer with and accuracy of +/-1.5%.

You take the thermometer outside and it reads the temperature to be `100.00^oF`. The actual temperature is somewhere between `98.50^oF` and `101.50^oF`.

Or if the thermometer reads `50.00^oF` then the actual temperature is between `49.25^oF`and `50.75^oF`.

As you can see, each of them have a range of value given -1.5% to value given +1.5%..