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The following are the ages of 300 patients getting medical treatment in a hospital on a particular day: Age (in years) 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 - Mathematics

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Question

The following are the ages of 300 patients getting medical treatment in a hospital on a particular day:

Age (in years) 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70
Number of patients 60 42 55 70 53 20

Form: More than type cumulative frequency distribution.

Chart
Sum

Solution

Also, we observe that all 300 patients which take medical treatment more than or equal to 10. Since, thete are 60 patients which take medical treatment in the interval 10 – 20, this means that there are 300 – 60 = 240 patients which take medical treatment more than or equal to 20. Continuing in the same manner.

More than type
Age (in year) Number of patients
More than or equals 10 60 + 42 + 55 + 70 + 53 + 20 = 300
More than or equals 20 42 + 55 + 70 + 53 + 20 = 240
More than or equals 30 55 + 70 + 53 + 20 = 198
More than or equals 40 70 + 53 + 20 = 143
More than or equals 50 53 + 20 = 73
More than or equals 60 60
More than or equals 70 0
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Chapter 13: Statistics and Probability - Exercise 13.3 [Page 169]

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NCERT Exemplar Mathematics [English] Class 10
Chapter 13 Statistics and Probability
Exercise 13.3 | Q 13.(ii) | Page 169

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