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Question
From the given Frequency distribution table, find the Average Class Mark.
Class InternalFrequency0−10210−20820−301230−40740−50950−60460−705
From the given Frequency distribution table, find the Average Class Mark.
Class InternalFrequency0−10210−20820−301230−40740−50950−60460−705
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Solution
The correct option is B 35
First, we need to construct the Table with the Corresponding Class Mark.
Class InternalClass markFrequency0−105210−2015820−30251230−4035740−5045950−6055460−70655
From the Given table we can see the class marks as - 5, 15, 25, 35, 45, 55, 65,
The Average Class mark = 5+15+25+35+45+55+657
= 2457 = 35
Since , the number of terms are odd and the range is for continuous data,
without even calculating we can see that the Middle value is 35 which is the average.
35
First, we need to construct the Table with the Corresponding Class Mark.
Class InternalClass markFrequency0−105210−2015820−30251230−4035740−5045950−6055460−70655
From the Given table we can see the class marks as - 5, 15, 25, 35, 45, 55, 65,
The Average Class mark = 5+15+25+35+45+55+657
= 2457 = 35
Since , the number of terms are odd and the range is for continuous data,
without even calculating we can see that the Middle value is 35 which is the average.
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