How to find the missing frequencies f1 and f2 if the mean is 73 and€f =200 , x-0,50,100,150,200,250. f-46,f1,f2,25,10,5 respectively
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Xifi=0,50f1,100f2,3750,2000,1250
Mean=total(fixi) ÷total(fi)
=7000+50f1+100f2÷200=73
Hence,7000+50f1+100f2=200×73=14600
Hence,50f1+100f2=14600-7000=7600
Hence,f1+2f2=152....(dividing eqn. by 50)
AND
wait a sec there should be given the frequencies, f1+f2=200-all other given frequencies, now u get another eqn. Solve simultaneously to get the answer.
Pls mark as brainliest if it helped u
Mean=total(fixi) ÷total(fi)
=7000+50f1+100f2÷200=73
Hence,7000+50f1+100f2=200×73=14600
Hence,50f1+100f2=14600-7000=7600
Hence,f1+2f2=152....(dividing eqn. by 50)
AND
wait a sec there should be given the frequencies, f1+f2=200-all other given frequencies, now u get another eqn. Solve simultaneously to get the answer.
Pls mark as brainliest if it helped u
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