Ex 13.1, 1 - Chapter 13 Class 10 Statistics

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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