Question

24.
Workers,
Member
6
Age
18-24
24-30
30.-36
3.- 42
42-48
8
1 2
8
4
48 - 54
2
find mean via step deviation method​

Answer 1

Answer:

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Step-by-step explanation:

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'=

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= i

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd'

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40 The formula used for arithmetic mean of grouped data by step deviation method is,

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40 The formula used for arithmetic mean of grouped data by step deviation method is, X

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40 The formula used for arithmetic mean of grouped data by step deviation method is, X =A+

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40 The formula used for arithmetic mean of grouped data by step deviation method is, X =A+ ∑f

X Mid point (X) Frequency (F) i=class interval width A=50 Assumed Means d'= ix−A fd' 20-40 30 4 20 50 -1 -4 40-60 50=A 8 20 50 0 0 60-80 70 12 20 50 1 12 80-100 90 16 20 50 2 32 Σf=40 Σfd ′ =40 The formula used for arithmetic mean of grouped data by step deviation method is, X =A+ ∑f∑fd

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