AP ICET 2015 Paper

Question : 143 of 200

Marks: +1, -0

If 6, 5, 4 and 3 occur in a data with frequencies 2, 5, 3 and 4 respectively, then the arithmetic mean of the data is

Solution:

∑f_{i}=2+5+3+4=14

∑f_{i}x_{i}=12+25+12+12=61

∴ Mean

=\;\;{∑f_{i}x_{i}}/{∑f_{i}}=\;\;{61}/{14}

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