Question

compute the skewness from the following figures: 25,15,23,40,27,25,23,25,20​

Answer 1

Step-by-step explanation:

STEP 1 :

x x – x (x – x )2

10  5 25

20 5 25

18  3 9

12 3 9

15 0 0

75 68

x = x = 75 = 15

n 5

STEP 2 :

 = (x – x )2

n

= 68 = 13.6

5

taking log on both sides

log  = 1(log 13.6)

2

= 1 (1.1335)

2

= 1.1335

2

log  = 0.5668

 = AL(0.5668)

= 3.689

STEP 3 :

CV =  x 100

x

= 3.689 x 100

15

= 368.9

15

= 24.59%