The three properties are accuracy, precision, and units.
Accuracy refers to how close a numerical answer is to the true value. It is important because it indicates the reliability of the answer and whether it can be used to make informed decisions or draw conclusions.
Accuracy refers to how close a numerical answer is to the true value, while precision refers to how close multiple measurements of the same quantity are to each other. In other words, accuracy is about correctness, while precision is about consistency.
Units are important in numerical answers because they provide context and meaning to the numbers. Without units, a numerical answer may be meaningless or misleading. Units also allow for consistency in calculations and comparisons between different quantities.
Yes, it is possible for a numerical answer to be accurate but not precise. This means that the answer is close to the true value, but the measurements used to obtain the answer may not be consistent with each other.