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Calculate the range and coefficent of range from the following data:

written 6.4 years ago by teamques10 ★ 70k

•   modified 6.4 years ago

C.I	21-25	26-30	31-35	36-40	41-45
frequency	4	16	38	12	10

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written 6.4 years ago by teamques10 ★ 70k

Solution:

C.I	20.5-25.5	25.5-30.5	30.5-35.5	35.5-40.5	40.5-45.5
frequency	4	16	38	12	10

Range = L - S

= 45.5 - 20.5

= 25

$Coefficient of range = \frac{L-S}{L+S}$

$ = \frac{45.5-20.5}{45.5+20.5}$

$= \frac{25}{66}$

OR 0.379

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