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(i) 10 ,11 ,8 ,10, 12 , 8, 10 , 11, 12, 10
count the number of scores . it is 10
in the case no single such scores . we will , therefore , select as the median the mean of the fifth and sixth scores . thus median scores = 12+8/2 = 20/2 = 10 Ans
(ii) Mean = sum of observation / number of observation
10+11+8+10+12+8+10+11+12+10/10 = 102/10 = 10.2 Ans
(iii) 10 , 11, 8, 10, 12, 8, 10, 11, 12, 10
three modes = 10 , 11 , 12 and 8 Ans
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