Question

11. Calculate the Standard Deviation and its
coefficient by direct method.
Values 5 8 7 11 14​

Answer 1

Answer:

Here,

Highest value (H)= 35

Lowest value (L) = 15

Range= Highest value − Lowest value

i.e. R= H− L

Substituting the given values in the formula

R= 35 − 15= 20

Coefficient of Range is as follows:

CR = H-L/H+L => 35-15/ 35+15

⇒ CR =0.4

Hence, the range (R) of the above data is 20 and coefficient of Range (CR) is 0.4

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