Correct Answer - Option 3 : 4
Formula used
D = iN/10
D = Decile
i = 1, 2, 3, 4, 5, 6,---
N = Total number of frequency
Calculation
x
|
f
|
cf
|
0
|
1
|
1
|
1
|
9
|
10
|
2
|
26
|
36
|
3
|
59
|
95
|
4
|
72
|
167
|
5
|
52
|
219
|
6
|
29
|
248
|
7
|
7
|
255
|
8
|
1
|
256
|
Total
|
256
|
|
Here We have to find 4th decile
∴ i = 4
⇒ D = 4 × 256/10
⇒ D = 25.6 × 4 = 102.4
∴ 102.4 lies in cumulative frequency 167 which is in x = 4
∴ 4th decile = 4