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Ex-14.1 Qno.3 plz explain how can we cancel 18 |
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Answer» From the given data mean is(a) 18 therefore (x)=a+sigma. Fidi/sigmafi=18=18+2f-40/44+f2f-40/44+f=02f-40=02f=40F=20Hence missing frequency is 20? Ncert or ......???? |
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