Question

From the following data. Find range and quartile deviation. also determine their coefficient.
Months 1 2 3 4 5 6 7 8 9 10 11
Sales(र) 78 80 80 82 84 84 86 86 88 88 90
please give solutions with step by step

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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

 

or, CR =

35-15

35+15

 

=

20

50

 

⇒ CR =0.4

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

Answer 2

Answer:

Step-by-step explanation: