1.

In case of inclusive classes the first step is to convert the same into exclusive classes by using adjustment value to change the limits ( See section 4.3.3.). Given the following frequency distribution with inclusive classes. The adjustment value for converting inclusive classes into exclusive classes is 0.5(=(6-5)/(2)). Deduct 0.5 from all the lower limits and add 0.5 to all upper limits before applying the method of calculation.

Answer»

Solution :
`l_(1)=8.5`
`Delta_(1)=8-5=3`
`Delta_(2)=8-2=6`
`i=8.5-5.5=3`
SUBSTITUTING the values :
Mode `=l_(1)+(Delta_(1))/(Delta_(1)+Delta_(2))xxi`
`=8.5+(3)/(3+6)xx3=8.5+(9)/(9)=9.5`


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