Infant death rate refers to the number of deaths under one year of age occurring among the live births in a given geographical area during a given year, per 1,000 live births occurring among the population of the given geographical area during the same year.
Imagine you're baking cookies for every newborn baby in your town this year. If infant mortality rate is high, it's like some cookies get burnt or ruined before they even cool off on the rack (before reaching their first birthday).
Mortality Rate: A measure of the frequency of deaths in a defined population during a specified interval.
Life Expectancy: The average period that a person may expect to live.
Child Mortality Rate: The probability per 1,000 that a newborn baby will die before reaching age five.
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