Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
Frequency | 7 | 12 | 13 | 10 | 8 |
Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
Frequency | 2 | 3 | 5 | 3 | p |
Answer:
Let assumed mean, a = 25. Here h = 1 0.
and
Now Mean,
Mean,
OR
Classes
Mid value
0-10
10-20
5
15
7
12
-2
-1
20-30
25
13
0
0
30-40
40-50
35
45
10
8
1
2
50
0
Mean,
Hence p
= 2
Classes
Mid value
Frequency
0-10
10-20
20-30
30-40
40-50
5
15
25
35
45
2
3
5
3
P
10
45
125
105
45p
13 + p
285 + 45p
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