For a data set 21 23 60 60 50 54 54 59 26 15 43 15, the missing data is mathematically given as
y=10
Generally, the equation for the median is mathematically given as
x= sum n/n
Therefore
x=21+23+60+60+50+54+54+59+26+15+43+15)/12
x=480/ 12
x= 40
In conclusion, since 50 is the median
y=x-40
y= 50-40
y=10
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