# A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows:(i) Make a grouped frequency distribution table for this data with class intervals as $0.00-0.04 AcademicMathematicsNCERTClass 9 #### Complete Python Prime Pack 9 Courses 2 eBooks #### Artificial Intelligence & Machine Learning Prime Pack 6 Courses 1 eBooks #### Java Prime Pack 9 Courses 2 eBooks Given: A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. To do: We have to (i) Make a grouped frequency distribution table for this data with class intervals as $0.00-0.04,0.04-0.08$, and so on. (ii) Find the number of days on which concentration of sulphur dioxide was more than $0.11$ parts per million. Solution: (i) The given data is large, so we construct a grouped frequency distribution table of class size 0.04. This implies, The class intervals are 0.00 - 0.04, 0.04 - 0.08 and so on. The data is represented in the grouped frequency distribution table as follows:  Concentration of$SO_2$(in ppm) Frequency 0.00-0.04 4 0.04-0.08 9 0.08-0.12 9 0.12-0.16 2 0.16-0.20 4 0.20-0.24 2 Total 30 (ii) The number of days in which the concentration of sulphur dioxide was more than$0.11$parts per million$= 2+4+ 2= 8\$

Updated on 10-Oct-2022 13:47:02