![Slide17.JPG](https://d1avenlh0i1xmr.cloudfront.net/42b2eb39-ded6-4fa8-8702-d4c239521bd4/slide17.jpg)
![Slide18.JPG](https://d1avenlh0i1xmr.cloudfront.net/a6f4ae26-60cf-4e51-9beb-7e5723b27033/slide18.jpg)
Last updated at April 16, 2024 by Teachoo
Ex 13.1, 6 The table below shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method. Mean(𝑥 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) Where a = Assumed mean h = Class interval Also, ∑▒𝒇𝒊 = 25 ∑▒𝒇𝒊𝒖𝒊 = −7 Putting values in formula Mean(𝒙 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) 𝑥 ̅ = 225 + 50 × (−7)/25 𝑥 ̅ = 225 − 14 𝒙 ̅ = 211 Thus, Mean Daily expenditure on food is Rs 211