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Last updated at August 17, 2026 by Teachoo
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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(๐ฅ ฬ ) = (โโ๐๐๐ฅ๐)/(โโ๐๐) ๐ฅ ฬ = 162/20 ๐ฅ ฬ = 8.1 Mean number of plants are 8.1 We used this method as ๐_๐ ๐_๐ is easier to calculate and sum