Question

calculate mean deviation from mean by direct method value below 10 20 30 40 50 69 70 no.of items 5 27 38 75 98 116 117​

Answer 1

Answer:

Explanation:

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Answer 2

Explanation:

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