10. The marks obtained by 15 students in Mathematics (out of 100) are given below: 60, 52, 82, 80, 78, 82, 54, 82, 50, 6 ,60,56,82,84,9 , 80. Find the mean deviation about the mode upto 2 places of decimals.
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3
Answer:
The marks of 15 students is
41,39,48,52,46,62,54,40,96,52,98,40,42,52,60
Mean =
15
41+39+48+52+46+62+54+40+96+52+98+40+42+52+60
=
15
822
=54.8;
Number of observations =15 (odd)
Median score =8th number arranging in ascending order which is 52.
Maximum frequency =3 of 52
∴ Mode =52..
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