If Efi= 100, a=15,x = 15 then Efidi=
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Mean=a+
∑f
i
∑f
i
u
i
×h,u
i
=
h
x
i
−a
a=25,h=10,∑f
i
u
i
=20,∑f
i
=100
Mean =25+
100
20
×10=
∑f
i
∑f
i
u
i
×h,u
i
=
h
x
i
−a
a=25,h=10,∑f
i
u
i
=20,∑f
i
=100
Mean =25+
100
20
×10=
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