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The following frequency distribution giv...

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality . Find the mean of the data
`{:("Monthly consumption(in units)","Number of consumers"),(65-85,4),(85-105,5),(105-125,13),(125-145,20),(145-165,14),(165-185,8),(185-205,4):}`

Text Solution

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The correct Answer is:
135.1
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The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median of the data.

The following distribution shows the pocket allowance of children of a locality The mean pocket allowance is Rs18 . Find the missing frequency f . {:("Daily pocket allowance (in Rupees)","Number of children"),(11-13,7),(13-15,6),(15-17,9),(17-19,13),(19-21,f),(21-23,5),(23-25,4):}

Knowledge Check

  • The median from the following data is {:("Mid-value","Frequency"),(115,6),(125,25),(135,48),(145,72),(155,116),(165,60),(175,38),(185,22),(195,3):}

    A
    `153.79`
    B
    `153.91`
    C
    `165.18`
    D
    `165.93`

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    A survey was conducted by a group of students as a part of their environment awareness programme , in which they collected the follwing data regarding the number of plants in 20 houses in a locality . Find the mean number of plants per house . {:("Number of plants","Number of houses"),(0-2,1),(2-4,2),(4-6,1),(6-8,5),(8-10,6),(10-12,2),(12-14,3):}

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