plz anyone explain question no.43
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pehle iski cf nikal lena
Mariyakhan203:
cf nikalne ke bad medain ka formula lga kr jo median diya gya he uske equal rakh dena isse x ki value pta chal jyegi aur fir jo total cf se nikali hogi usme x ki value rkh kr angle sum property ki trah solve kr dena
is question ko dobara se dalo
isko pura solve kr deti hun me
ismw muze yeh batao ki median class knsi lege
20-30 vali
ok
bcz 20-30me hi jo median diya he28.5ayega
achaa
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median class is selected by seeing in which cf n÷2 lies in and cf is the preceding column . i hope it helped.
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