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Problem: 4 deciles of {{10,11,12,13,14},{3,12,18,12,3}} [ Calculator, Method and examples ]

Solution:
Your problem -> 4 deciles of {{10,11,12,13,14},{3,12,18,12,3}}

 x Frequencyf cf 10 3 3 11 12 15 12 18 33 13 12 45 14 3 48 --- --- --- n = 48 --

Here, n = 48

D_4 = ((4(n+1))/10)^(th) value of the observation

=((4*49)/10)^(th) value of the observation

=(19.6)^(th) value of the observation

=12

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