Question

(b) Calculate mean, median and standard deviation from the following data:
Wages
0-10 10- 20- 30- 40- 50-
(Rs.'000)
20 30 40 50 60
No. Of
12 17 23 39 16 03
workers

Answer 1

Step-by-step explanation:

Question 1:

5 students obtained following marks in statistics:

20, 35, 25, 30, 15

Find out range and coefficient of range.

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