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# Question 13(i) The following are the ages of 300 patients getting medical treatment in a hospital on a particular day Age(in year)10−2020−3030−4040−5050−6060−70Number of patients604255705320 Form (i) Less than type cumulative frequency distribution.

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Solution

## (i) We observe that the number of patients which take medical treatment in a hospital on a particular day less than 10 is 0. Similarly, less than 20 include the number of patients which take medical treatment from 0-10 as well as the number of patients which take medical treatment from 10-20. So, the total number of patients less than 20 is 0 + 60 = 60, we say that the cumulative frequency of the class 10-20 is 60, Similarly, for other class. Less than typeLess than typeAge(in year)Number of studentsLess than 100Less than 2060Less than 30102Less than 40157Less than 50227Less than 60280Less than 70300

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