Question

Find the mean deviation about the mean for the data Xi 5,7,9,10,12,15 and fi 8,6,2,2,2,6​

Answer 1

Step-by-step explanation:

5*8=40

7*6=42

9*2=18

10*2=20

12*2=24

15*6=90

£fixi=40+42+18+20+24+90

=234

£fi=8+6+2+2+2+6

=26

mean=234/26

=9

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Answer 2

Step-by-step explanation:

find the mean deviation

5,7,9,10,12,15

8,6,2,2,2,6

5×8=40 7×6=42 9×2=18 10×2=20 12×2=24 15×6=90

40+42+18+20+24+90=234

8+6+2+2+2+6=26mean

234÷26=9ans .

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