5- Calculate Range and it's coefficient 12,14,16,11,22,18.
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Answer:
eg:
x
m
= Mid value of highest class = 45
x
o
= Mid value of lowest class = 5
Therefore,
Range = x
m
−x
o
=45−5=40
Coefficient of range =
x
m
+x
o
x
m
−x
o
=
45+5
45−5
=
50
40
=
5
4
=0.8
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