CASE STUDY QUESTION 32-Class X-Maths

CASE STUDY QUESTION 32-Class X-Maths

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.

Based on the above information, answer the following questions :
(a) The modal class interval is :
(i) 45-55 (ii) 35-45 (iii) 25-35 (iv) 15-25

Since the highest frequency is 23 which belongs to 35 – 45.
Therefore, modal class is 35 – 45.