if mean of 5,9,a,11,21 is 30 find the valie of a
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A/q
(5+9+a+11+21)/5=30
⇒46+a=150
⇒a=104
(5+9+a+11+21)/5=30
⇒46+a=150
⇒a=104
vishnu152449:
that's right
thanx
Answered by
1
Given data
5,9,a,11,21
Mean = sum of observations/ no,of observations = 30 [given]
(5+9+a+11+21)/5 = 30
(46+a)/5 = 30
46+a = 30×5
46+a = 150
a = 150 - 46
Therefore a = 104
5,9,a,11,21
Mean = sum of observations/ no,of observations = 30 [given]
(5+9+a+11+21)/5 = 30
(46+a)/5 = 30
46+a = 30×5
46+a = 150
a = 150 - 46
Therefore a = 104
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