1.

Calculate thevalueofmeanand medianfromthefollowingdata value 60 65 62 63 66 61 64frequency 25 125 400 375 101 140 220​

Answer»

um of all OBSERVATIONS/ TOTAL no.of observations =60+65+62+63+66+61+64/7 =441/7 =63 is the meanhere ,for median N= 7 which is odd no.so, (n+1)/2th observation =(7+1)/2th observation =8/2 =4th observation so, here 4th observation is 63 so,median is 63



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