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Question

The age of 30 workers in a factory are as follows

AgeNo. of workers245257268274286

(i) Find the mean,median and mode for the above ungrouped data. [4 MARKS]


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Solution

Concept: 1 Mark
Application: 1 Mark each

AgeNo. of workersfx245120257175268208274108286168

Mean
=fxf=(24×5)+(25×7)+(26×8)+(27×4)+(28×6)5+7+8+4+6

=77930

=25.97
AgeNo of WorkersC.F245525712268202742428630

Median =(n2)th observation+(n2+1)th observation2

=15th observation+16th observation2

=26+262

=26

Highest frequency = 8

Mode = 26


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