x=8,12,15,m,20,25,30. y=12,16,20,24,16,8,4. find m if mean is 16.6
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xi do
8,
12
15
p
20
25
30
fixi
96
192
300
24p
320
200
720
total
1828+24p
fi
12
16
20
24
16
8
24
total
120. mean = fixi/xi
15=1828+24p/120
1800-1824=24p
p= -24/24
p= -1
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