find mean
class interval frequency
10-25
26-40
40-55
55-70
70-85
85-100
maheensha:
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Answers
xi
15
30
45
60
75
90
fixi
30
90
315
300
450
520
segma =£fixi/£fi
x=2905/29=
xi
15
30
45
60
75
90
fixi
30
90
315
300
450
520
segma =£fixi/£fi
x=2905/29=
i also dont know
Hmm
sorry
Why
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