Final answer:
Results are always reported with 100% certainty only when discrete variables are measured, not when continuous variables are measured.
Step-by-step explanation:
In statistics, results are always reported with 100% certainty only when discrete variables are measured. Discrete variables are countable and their values are obtained by counting. Examples of discrete variables include the number of red balls or the number of heads. On the other hand, results cannot be reported with 100% certainty when continuous variables are measured. Continuous variables have uncountable values that are obtained by measuring. Examples of continuous variables include temperature or height.
Therefore, the statement is True. Results can be reported with 100% certainty only when discrete variables are measured but not when continuous variables are measured.