the observation of some data arrange in descending order as 31,33, a + 2,a + 6,45,53 where a is a constant if the median of the data is 39 find the value of a also find the mean of the data
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4
median =39
Median for even no =a+2+a+6/2
39=2a+8/2
78=2a+8
2a=70
a=35
a+2=37
a+6=41
Mean=31+33+37+41+45+53/6
=240/6
=40
Median for even no =a+2+a+6/2
39=2a+8/2
78=2a+8
2a=70
a=35
a+2=37
a+6=41
Mean=31+33+37+41+45+53/6
=240/6
=40
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Answered by
0
n=6
so median = n/2+n/2+1÷ 2
39 = 3+4 observation/2
39*2= a+2+a+6
78= 2a+8
70=2a
35=a
so mean is= sum of all divide of total number..
sum of all = 31+33+37+41+45+53= 240
mean = 240/6
40 is correct answer.¥¥
so median = n/2+n/2+1÷ 2
39 = 3+4 observation/2
39*2= a+2+a+6
78= 2a+8
70=2a
35=a
so mean is= sum of all divide of total number..
sum of all = 31+33+37+41+45+53= 240
mean = 240/6
40 is correct answer.¥¥
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