The prices of different articles and demand for them is shown in the following frequency distribution table. Find the median of the prices.

Answer

The median of the prices is Rs. 32.

Explanation

Here, `N = Sigmaf_(i) = 400. N/2 . N/2 = 400/2 = 200`
200th score is in the class `20-40`
`:. 20 - 40` is the median class
` L = 20, cf = 140, f = 100 , h = 20`
Median ` = L + [(N/2 - cf)/f] xx h`
` = 20 + ((200 - 140)/100) xx 20`
` = 20 + 60/100 xx 20 " " = 20 + 12 = 32`