Over the past several decades, the United Nations has kept records of the number of births worldwide, categorized by the age of the mother. A frequency table displaying this data for the years 1960 to 1970 is shown.
Consider the class consisting of mothers between the ages of 40 and 45 years, who gave birth to an estimated 52,335,000 children worldwide between 1960 and 1970.
Age of mother,in years
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