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Following information pertains to the da...

Following information pertains to the daily income of 150 families. Calculate the arithmetic mean.
`{:("Income (in Rs.)",,"Number of Families"),("More than 75",," "150),("More than 85",," "140),("More than 95",," "115),("More than 105",," "95),("More than 115",," "70),("More than 125",," "60),("More than 135",," "40),("More than 145",," "25):}`

Text Solution

Verified by Experts

Conversion of a Cumulative Frequency Distribution into a Simple Frequency Distribution
(Assumed Average, A = 110)

`barX=A+(sumfd')/(sumf)xxC`
`=110+(95)/(150)xx10`
`=110+6.3`
`=116.3`
`:." Arithmetic mean = Rs. 116.3."`
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