Question
Calculate the inter quartile range, quartile deviation and coefficient of quartile deviation of the following frequency distribution relating to bonus paid up to workers.
|
Bonus (in Rs.) |
No. of Workers |
|
300–320 |
2 |
|
320–340 |
4 |
|
340–360 |
6 |
|
360–380 |
8 |
|
380–400 |
12 |
|
400–420 |
15 |
|
420–440 |
5 |
|
440–460 |
5 |
|
460–480 |
3 |
Calculate a suitable measure of dispersion and justify your choice.
Solution
|
Bonus (in Rs.) |
No. of Workers |
c.f. |
|
300–320 |
2 |
2 |
|
320–340 |
4 |
6 |
|
340–360 |
6 |
12 |
|
360–380 |
8 |
20 |
|
380–400 |
12 |
32 |
|
400–420 |
15 |
47 |
|
420–440 |
5 |
52 |
|
440–460 |
5 |
57 |
|
460–480 |
3 |
60 |
