Final answer:
The statement is false; an improper fraction is when the numerator is larger than the denominator, not vice versa.
Step-by-step explanation:
When considering whether a ratio is improper, it is important to understand the definition of a fraction and a ratio. A fraction is expressed as a/b, where a is the numerator and b is the denominator. An improper fraction is one where the numerator is larger than the denominator, not the other way around.
Therefore, the statement 'When the denominator is bigger than the numerator, the ratio is improper' is false. A ratio simply compares two quantities and can be represented as a fraction, but having a larger denominator than numerator does not make it improper.