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# Solution - 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 - CBSE Class 9 - Mathematics

ConceptPresentation of Data

#### Question

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:-

 0.03 0.08 0.08 0.09 0.04 0.17 0.16 0.05 0.02 0.06 0.18 0.2 0.11 0.08 0.12 0.13 0.22 0.07 0.08 0.01 0.1 0.06 0.09 0.18 0.11 0.07 0.05 0.07 0.01 0.04

(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) For how many days, was the concentration of sulphur dioxide more than 0.11 parts per million?

#### Solution

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#### APPEARS IN

NCERT Mathematics Textbook for Class 9
Chapter 14: Statistics
Q: 5 | Page no. 245

#### Reference Material

Solution for question: 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 concept: Presentation of Data. For the course CBSE
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