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...



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


Estimated number of occurrences,
in thousands
15 – 20125,075
20 – 25312,055
25 – 30300,458
30 – 35217,581
35 – 40131,236
40 – 4552,335
45 – 5010,577

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.



What is the lower limit of this class?



lower limit:






What is the upper limit of this class?








upper limit:






What is the class width?








class width:






What is the midpoint of this class? Round your answer to one decimal place.










midpoint:






Jun 01, 2022
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