5. Mean of variable x is 9. What is the mean of the variable y=x+4?
6. Find the median of 42,28,28,57,31,23,50,34,32,37
7. Mention the amnirical forn
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median= 33
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Step-by-step explanation:
5. x=9
y=x+4 ...................A
put value of x in eq. A
y=9+4
y=13
6. first arrange them in ascending order
now, total no. of outcomes =10 [hence it is even]
now, median is equal to n/2
where, n is total no. of observation
in ascending order,
23,28,28,31,32,34,37,42,50,57
now, n=10
so median =[n/2]th term
=[10/2]th term
=[5]th term
now, check the 5th term in the arrangement of outcomes.
so, median = 32
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