find the mean of the following frequency distribution by step deviation method…? About the author Camila
Step-by-step explanation: Class interval width (w) = 8−4=4 Class interval X No. of employees F d= i X−A Fd 4-8 6 5 -1 -5 8-12 10=A 10 0 0 12-16 14 15 1 15 16-20 18 20 2 40 ΣF=50 ΣFd=50 Mean = A+ Σf Σfd ×i=10+( 50 50 ×4)=10+4=14 D) 14 Reply
Step-by-step explanation:
Class interval width (w) = 8−4=4
Class interval X No. of employees
F d=
i
X−A
Fd
4-8 6 5 -1 -5
8-12 10=A 10 0 0
12-16 14 15 1 15
16-20 18 20 2 40
ΣF=50 ΣFd=50
Mean = A+
Σf
Σfd
×i=10+(
50
50
×4)=10+4=14
D) 14