Question

MNO
Calculate Q1, and Q3 from the data given below.
Marks 40 - 49 50 - 59 60 - 69
3
11
21
70 - 79
30
80 - 89
24
Q​

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