Final answer:
The number 1.5 is known as the Fertility Rate. It represents the average number of children born to a woman in her lifetime.
Step-by-step explanation:
The number 1.5 is known as the Fertility Rate.
The fertility rate is a measure that represents the average number of children born to a woman in her lifetime. In Italy, the fertility rate is 1.5, which means that on average, each woman has 1.5 babies.
This rate has seen a sharp decline from the rate of 5 births per woman in 1950. It is an important indicator of population growth and can vary between countries and regions.