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CASE STUDY QUESTION 22, The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing, pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute, respiratory syndrome coronavirus 2 (SARS-CoV-2). It was first identified in, December 2019 in Wuhan, China., During survey, the ages of 80 patients infected by COVID and admitted in the one of, the City hospital were recorded and the collected data is represented in the less than, cumulative frequency distribution table.

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Age(in yrs) No. of patients, 5 – 15, 6, 15 – 25, 11, 25 – 35, 21, 35 – 45, 23, 45 – 55, 14, 55 – 65, 5, , Based on the information, answer the following questions :, (a) The class interval with highest frequency is :, (i) 45-55, (ii) 35-45, (iii) 25-35, (iv) 15-25, Highest frequency is 23, which belongs to 35 – 45., (b) Which age group was affected the least?, (i) 35-45, (ii) 25-35, (iii) 55-65, (iv) 45-55, Ans: (i) 35-45

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(c) Which age group was affected the most?, (i) 35-45, (ii) 25-35, (iii) 15-25, (iv) 45-55, Ans: (i) 35-45, , Age(in yrs) No. of patients, 5 – 15, 6, 15 – 25, 11, 25 – 35, 21, 35 – 45, 23, 45 – 55, 14, 55 – 65, 5, , (d) How many patients of the age 45 years and above were admitted?, (i) 61, (ii) 19, (iii) 14, (iv) 23, Ans: (ii) 19

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(e) How many patients of the age 35 years and less were, admitted?, (i) 17, (ii) 38, (iii) 61, (iv) 41, Ans: (ii) 38, , Age(in yrs) No. of patients, 5 – 15, 6, 15 – 25, 11, 25 – 35, 21, 35 – 45, 23, 45 – 55, 14, 55 – 65, 5

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