Question A calculator manufacturing company checks 500 calculator units and finds that 25 of them have non-functioning keys. What is the relative frequency of a non-defective calculator from this batch of items? Write your answer in simplest terms. (1 point)
The relative frequency of a non-defective calculator is (500-25)/500 = 475/500 = 19/20.
Therefore, the relative frequency of a non-defective calculator from this batch is 19/20.