Question

The following table gives the daily income of 50 workers of a factory daily Rs. 100 to 120 - no of workers 12 Rs. 120 - 140 - no of workers 14 Rs.140 - 160 - no of workers 8 Rs.160 - 180 - no of workers 6 and Rs.180 - 200 - no of workers 10 find the median of the above data

Answer 1

"Make a table and find out the di and fidi of the table. Then get the cumulative frequency (cf)

The number of observation = 50

n/2 = 25

This will lie above 120-140

Therefore the median class will be 120-140

Lower class = 120 upper class = 140

Cf of the class = 12

Frequency = 14

Put the data in the formula, l + [(n/2 – cf)/f]h

Median = 120 + [(25-12)/14] 8 20

138.57

"

Answer 2

hope it helps...........