Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Ex 13.1, 1 A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Which method did you use & why? Mean(𝑥 ̅) = (∑▒𝑓𝑖𝑥𝑖)/(∑▒𝑓𝑖) 𝑥 ̅ = 162/20 𝑥 ̅ = 8.1 Mean number of plants are 8.1 We used this method as 𝒇_𝒊 𝒙_𝒊 is easier to calculate and sum

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.