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Find the mean, median and mode of the fo...

Find the mean, median and mode of the following data

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`therefore` Mean=`barx=a+h(Sigmaf_iu_i)/(Sigmaf_i)=35+10xx"-5"/64=35-0.78=34.22`
Median=`l+((N/2-cf))/fxxh " " because N/2=64/2=32`
`therefore` Median class is 30-40
`therefore` l=30,cf =22,f=20, h=10
`therefore M=30+(32-22)/20xx10=30+100/20=35`
Mode=`l+((f_1-f_0)/(2f_1-f_0-f_2))xxh`
Here, Modal class is 30-40
`therefore f_1=20,f_0=13,f_2=14,h=10,l=30`
`therefore` Mode = 30+`((20-13)/(40-13-14))xx10`
`=30+70/13=35.38`
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