For a certain group frequency distribution, f¡ u¡ = - 106 and f¡ = 250 where u¡ = x¡ - 41/2 find the mean
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mean = a+fiui/fi
=a=41
h=2
41 ×250/250+- 106/250=
10250/250+-106/250=
10144/250= 40.57
=a=41
h=2
41 ×250/250+- 106/250=
10250/250+-106/250=
10144/250= 40.57
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