A Calculator manufacturing company has 500 Calculator units and 25 of them have non-functioning keys, approximate the relative frequency of a non-defective unit from this batch of items, express your answer in the simplest form of a fraction
The relative frequency of a non-defective unit can be calculated by subtracting the number of non-defective units from the total number of units, and then dividing by the total number of units:
Relative frequency of non-defective units = (500 - 25) / 500
Relative frequency of non-defective units = 475 / 500
To express this as a simplest form fraction, we can simplify by finding the greatest common divisor (GCD) of 475 and 500, which is 25:
Relative frequency of non-defective units = 19 / 20
Therefore, the relative frequency of a non-defective unit from this batch of items is 19/20.