Question

If Arithmetic Mean is 68.25,find the Value of 'A' (Assumed Mean) from following Series (X): 50, 58, 60, 65, 70,A,80,100 (f) : 2, 20, 5, 35, 8, 10,16, 4​

Answer 1

Answer:

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

Step-by-step explanation: