1. Chapter 14 Class 10 Statistics
  2. Serial order wise


Ex 14.1, 7 To find out the concentration of SO2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below. Find the mean concentration of SO2 in the air. Mean(π‘₯ Μ…) = (βˆ‘β–’π‘“π‘–π‘₯𝑖)/(βˆ‘β–’π‘“π‘–) π‘₯ Μ… = 2.96/30 = 296/3000 = 98.67/1000 = 0.0986 = 0.099 Mean concentration of SO2 in the air is 0.099 ppm

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.