Question

x:10,20,15,12,30. f:12, 6 , 8 ,10, 4. the mean of the distribution is. a)10;b)15;c)12;d)none​

Answer 1

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Class Interval frequency (fi) Mid value fixi

0-10 12 5 60

10-20 16 15 240

20-30 6 25 150

30-40 7 35 245

40-50 9 45 405

N=∑fi=50 ∑fixi=1100

∴Mean=

∑fi

∑fixi

​

=

50

1100

​

=22

Step-by-step explanation: