how to find arthmatic mean for grouped data
(Formulas)
urgent please.......
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sum of all the values / no of values
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Sn = n/2 [ 2a + ( n-1) d ]
Sn = n/2 ( 2a + l )
Where n is the no. Of terms
a is the first term
d is the common difference and
l is the last term
suvosi:
Thank u so much
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